Auto-updater toggle option needed

My server has a poor Internet connection to GitHub, thus errors concerning auto updaters often occurs. It will be great if you could offer an option to toggle off the auto update checker.
```log
[11:28:21 ERROR]: Couldn't pass ProxyInitializeEvent to fastmotd
java.io.UncheckedIOException: Unable to check for updates.
at net.elytrium.java.commons.updates.UpdatesChecker.checkVersionByURL(UpdatesChecker.java:48) ~[?:?]
at net.elytrium.fastmotd.FastMOTD.reload(FastMOTD.java:108) ~[?:?]
at net.elytrium.fastmotd.FastMOTD.onProxyInitialization(FastMOTD.java:102) ~[?:?]
at net.elytrium.fastmotd.Lmbda$1.execute(Unknown Source) ~[?:?]
at com.velocitypowered.proxy.event.UntargetedEventHandler$VoidHandler.lambda$buildHandler$0(UntargetedEventHandler.java:47) ~[velocity.jar:3.1.2-SNAPSHOT (git-e8bf6ab5-b161)]
at com.velocitypowered.proxy.event.VelocityEventManager.fire(VelocityEventManager.java:598) ~[velocity.jar:3.1.2-SNAPSHOT (git-e8bf6ab5-b161)]
at com.velocitypowered.proxy.event.VelocityEventManager.lambda$fire$5(VelocityEventManager.java:479) ~[velocity.jar:3.1.2-SNAPSHOT (git-e8bf6ab5-b161)]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136) ~[?:?]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) ~[?:?]
at java.lang.Thread.run(Thread.java:833) [?:?]
Caused by: java.net.ConnectException: Connection refused
at sun.nio.ch.Net.pollConnect(Native Method) ~[?:?]
at sun.nio.ch.Net.pollConnectNow(Net.java:672) ~[?:?]
at sun.nio.ch.NioSocketImpl.timedFinishConnect(NioSocketImpl.java:542) ~[?:?]
at sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:597) ~[?:?]
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:327) ~[?:?]
at java.net.Socket.connect(Socket.java:633) ~[?:?]
at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:304) ~[?:?]
at sun.net.NetworkClient.doConnect(NetworkClient.java:178) ~[?:?]
at sun.net.www.http.HttpClient.openServer(HttpClient.java:498) ~[?:?]
at sun.net.www.http.HttpClient.openServer(HttpClient.java:603) ~[?:?]
at sun.net.www.protocol.https.HttpsClient.(HttpsClient.java:266) ~[?:?]
at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:380) ~[?:?]
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(AbstractDelegateHttpsURLConnection.java:189) ~[?:?]
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1242) ~[?:?]
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1128) ~[?:?]
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:175) ~[?:?]
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1665) ~[?:?]
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1589) ~[?:?]
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:224) ~[?:?]
at net.elytrium.java.commons.updates.UpdatesChecker.checkVersionByURL(UpdatesChecker.java:46) ~[?:?]
... 9 more
```