Cannot upgrade from 10.6 to EDGE on Tomcat

## Problem description

` tail -f airsonic.log -n 100
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-util.jar:9.0.36]
at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:118) ~[na:na]
at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:773) ~[catalina.jar:9.0.36]
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:427) ~[catalina.jar:9.0.36]
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1576) ~[catalina.jar:9.0.36]
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:309) ~[catalina.jar:9.0.36]
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123) ~[catalina.jar:9.0.36]
at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:423) ~[catalina.jar:9.0.36]
at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:366) ~[catalina.jar:9.0.36]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:936) ~[catalina.jar:9.0.36]
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841) ~[catalina.jar:9.0.36]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[catalina.jar:9.0.36]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[catalina.jar:9.0.36]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[catalina.jar:9.0.36]
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-util.jar:9.0.36]
at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) ~[na:na]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[catalina.jar:9.0.36]
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) ~[catalina.jar:9.0.36]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[catalina.jar:9.0.36]
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421) ~[catalina.jar:9.0.36]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[catalina.jar:9.0.36]
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) ~[catalina.jar:9.0.36]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[catalina.jar:9.0.36]
at org.apache.catalina.startup.Catalina.start(Catalina.java:633) ~[catalina.jar:9.0.36]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:343) ~[bootstrap.jar:9.0.36]
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:474) ~[bootstrap.jar:9.0.36]

2020-10-15 21:57:42.307 INFO --- o.a.p.u.LegacyHsqlMigrationUtil : HSQLDB database backed up to /var/airsonic/db.backup.20201015215742
2020-10-15 21:57:42.325 ERROR --- o.s.boot.SpringApplication : Application run failed

java.lang.RuntimeException: Failed to upgrade HSQLDB database
at org.airsonic.player.util.LegacyHsqlMigrationUtil.upgradeFileHsqlDbIfNeeded(LegacyHsqlMigrationUtil.java:160) ~[classes/:11.0.0-SNAPSHOT]
at org.airsonic.player.spring.StartupEventListener.onApplicationEvent(StartupEventListener.java:17) ~[classes/:11.0.0-SNAPSHOT]
at org.airsonic.player.spring.StartupEventListener.onApplicationEvent(StartupEventListener.java:1) ~[classes/:11.0.0-SNAPSHOT]
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127) ~[spring-context-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.springframework.boot.context.event.EventPublishingRunListener.contextPrepared(EventPublishingRunListener.java:82) ~[spring-boot-2.2.10.RELEASE.jar:2.2.10.RELEASE]
at org.springframework.boot.SpringApplicationRunListeners.contextPrepared(SpringApplicationRunListeners.java:59) ~[spring-boot-2.2.10.RELEASE.jar:2.2.10.RELEASE]
at org.springframework.boot.SpringApplication.prepareContext(SpringApplication.java:371) ~[spring-boot-2.2.10.RELEASE.jar:2.2.10.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:314) ~[spring-boot-2.2.10.RELEASE.jar:2.2.10.RELEASE]
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:152) ~[spring-boot-2.2.10.RELEASE.jar:2.2.10.RELEASE]
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:132) ~[spring-boot-2.2.10.RELEASE.jar:2.2.10.RELEASE]
at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:92) ~[spring-boot-2.2.10.RELEASE.jar:2.2.10.RELEASE]
at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:172) ~[spring-web-5.2.9.RELEASE.jar:5.2.9.RELEASE]
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5128) ~[catalina.jar:9.0.36]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[catalina.jar:9.0.36]
at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:717) ~[catalina.jar:9.0.36]
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:690) ~[catalina.jar:9.0.36]
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:705) ~[catalina.jar:9.0.36]
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:978) ~[catalina.jar:9.0.36]
at org.apache.catalina.startup.HostConfig$DeployWar.run(HostConfig.java:1848) ~[catalina.jar:9.0.36]
at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) ~[na:na]
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-util.jar:9.0.36]
at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:118) ~[na:na]
at org.apache.catalina.startup.HostConfig.deployWARs(HostConfig.java:773) ~[catalina.jar:9.0.36]
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:427) ~[catalina.jar:9.0.36]
at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1576) ~[catalina.jar:9.0.36]
at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:309) ~[catalina.jar:9.0.36]
at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:123) ~[catalina.jar:9.0.36]
at org.apache.catalina.util.LifecycleBase.setStateInternal(LifecycleBase.java:423) ~[catalina.jar:9.0.36]
at org.apache.catalina.util.LifecycleBase.setState(LifecycleBase.java:366) ~[catalina.jar:9.0.36]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:936) ~[catalina.jar:9.0.36]
at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:841) ~[catalina.jar:9.0.36]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[catalina.jar:9.0.36]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1384) ~[catalina.jar:9.0.36]
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1374) ~[catalina.jar:9.0.36]
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[na:na]
at org.apache.tomcat.util.threads.InlineExecutorService.execute(InlineExecutorService.java:75) ~[tomcat-util.jar:9.0.36]
at java.base/java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:140) ~[na:na]
at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:909) ~[catalina.jar:9.0.36]
at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:262) ~[catalina.jar:9.0.36]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[catalina.jar:9.0.36]
at org.apache.catalina.core.StandardService.startInternal(StandardService.java:421) ~[catalina.jar:9.0.36]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[catalina.jar:9.0.36]
at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:930) ~[catalina.jar:9.0.36]
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) ~[catalina.jar:9.0.36]
at org.apache.catalina.startup.Catalina.start(Catalina.java:633) ~[catalina.jar:9.0.36]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:566) ~[na:na]
at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:343) ~[bootstrap.jar:9.0.36]
at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:474) ~[bootstrap.jar:9.0.36]
Caused by: java.sql.SQLException: No suitable driver found for jdbc:hsqldb:file:/var/airsonic/db/airsonic;hsqldb.tx=mvcc;sql.enforce_size=false;sql.char_literal=false;sql.nulls_first=false;hsqldb.defrag_limit=50;shutdown=true
at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:702) ~[java.sql:na]
at java.sql/java.sql.DriverManager.getConnection(DriverManager.java:189) ~[java.sql:na]
at org.airsonic.player.util.LegacyHsqlMigrationUtil.getHsqlDbConnection(LegacyHsqlMigrationUtil.java:45) ~[classes/:11.0.0-SNAPSHOT]
at org.airsonic.player.util.LegacyHsqlMigrationUtil.performHsqlDbUpgrade(LegacyHsqlMigrationUtil.java:123) ~[classes/:11.0.0-SNAPSHOT]
at org.airsonic.player.util.LegacyHsqlMigrationUtil.upgradeFileHsqlDbIfNeeded(LegacyHsqlMigrationUtil.java:157) ~[classes/:11.0.0-SNAPSHOT]
... 54 common frames omitted

`

### Steps to reproduce
Upgrading from 10.6 to EDGE on tomcat and you get driver not found.
Same issue as JPSONIC issue #521
## System information

* **Airsonic version**: *11 something*
* **Operating system**: *OpenSuse 15.2*
* **Java version**: *11*
* **Proxy server**: *if running Airsonic behind a proxy, what server and
version? Otherwise,* None
* **Client**: *what browser and version you use to access the Airsonic web
interface, or the name and version of another app you're using.*
* **Language**: *which langauge/internationalization is in use*

## Additional notes

*Include any extra notes here. Otherwise you may remove this section.*