Error creating bean with name 'grpcHealthService'

**The context**

Error creating bean with name 'grpcHealthService'

**The question**

I'm using
grpc-server-spring-boot-starter - 2.14.0.RELEASE ans when start my app i got error while Initialization bean grpcHealthService

**Stacktraces and logs**

````txt
2023-11-20T18:24:03.159Z [main] error SpringApplication.java:830 - Application run failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'grpcHealthService' defined in class path resource [net/devh/boot/grpc/server/autoconfigure/GrpcHealthServiceAutoConfiguration.class]: Initialization of bean failed; nested exception is org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class io.grpc.protobuf.services.HealthServiceImpl: Common causes of this problem include using a final class or a non-visible class; nested exception is java.lang.IllegalArgumentException: Cannot subclass final class io.grpc.protobuf.services.HealthServiceImpl
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:628)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:542)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:953)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:918)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:583)
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:145)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:740)
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:415)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1312)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1301)
at com.checkmarx.ast.flow.listener.FlowListenerApp.main(FlowListenerApp.java:16)
Caused by: org.springframework.aop.framework.AopConfigException: Could not generate CGLIB subclass of class io.grpc.protobuf.services.HealthServiceImpl: Common causes of this problem include using a final class or a non-visible class; nested exception is java.lang.IllegalArgumentException: Cannot subclass final class io.grpc.protobuf.services.HealthServiceImpl
at org.springframework.aop.framework.CglibAopProxy.getProxy(CglibAopProxy.java:209)
at org.springframework.aop.framework.ProxyFactory.getProxy(ProxyFactory.java:110)
at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.createProxy(AbstractAutoProxyCreator.java:478)
at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.wrapIfNecessary(AbstractAutoProxyCreator.java:342)
at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:291)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:455)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1808)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:620)
... 15 more
Caused by: java.lang.IllegalArgumentException: Cannot subclass final class io.grpc.protobuf.services.HealthServiceImpl
at org.springframework.cglib.proxy.Enhancer.generateClass(Enhancer.java:660)
at org.springframework.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)
at org.springframework.cglib.core.ClassLoaderAwareGeneratorStrategy.generate(ClassLoaderAwareGeneratorStrategy.java:57)
at org.springframework.cglib.core.AbstractClassGenerator.generate(AbstractClassGenerator.java:358)
at org.springframework.cglib.proxy.Enhancer.generate(Enhancer.java:585)
at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:110)
at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData$3.apply(AbstractClassGenerator.java:108)
at org.springframework.cglib.core.internal.LoadingCache$2.call(LoadingCache.java:54)
at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
at org.springframework.cglib.core.internal.LoadingCache.createEntry(LoadingCache.java:61)
at org.springframework.cglib.core.internal.LoadingCache.get(LoadingCache.java:34)
at org.springframework.cglib.core.AbstractClassGenerator$ClassLoaderData.get(AbstractClassGenerator.java:134)
at org.springframework.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:319)
at org.springframework.cglib.proxy.Enhancer.createHelper(Enhancer.java:572)
at org.springframework.cglib.proxy.Enhancer.createClass(Enhancer.java:419)
at org.springframework.aop.framework.ObjenesisCglibAopProxy.createProxyClassAndInstance(ObjenesisCglibAopProxy.java:57)
at org.springframework.aop.framework.CglibAopProxy.getProxy(CglibAopProxy.java:206)
... 22 more
````

**The application's environment**

Which versions do you use?
* Spring (boot): 2.6.6
* grpc-java: 1.51.0
* grpc-spring-boot-starter: 2.14.0.RELEASE
* java: version + architecture (64bit?) 11
* Other relevant libraries...

**Additional information**

* Did it ever work before? with grpc-spring-boot-starter 2.11 and grpc-java 1.35 it work fine
* How can we reproduce it?
* Do you have a demo?

Start with the grpcHealthService bean and the GrpcHealthServiceAutoConfiguration.class location named in the stack trace. Compare the reported Spring Boot, grpc-java, grpc-spring-boot-starter, and Java versions with the earlier working versions, then reproduce the final-class CGLIB failure. Done means identifying a compatible configuration or dependency change and documenting a confirmed reproduction and resolution.

Written by the indexing model from the issue text.