Support Gradle Configuration Caching

[ZacSweers]

This plugin has two reported issues:

org.gradle.api.InvalidUserCodeException: Listener registration 'TaskExecutionGraph.beforeTask' by org.gradle.execution.taskgraph.DefaultTaskExecutionGraph@167d2e92 is unsupported.
	at org.gradle.configurationcache.initialization.DefaultConfigurationCacheProblemsListener.onBuildScopeListenerRegistration(ConfigurationCacheProblemsListener.kt:90)
	at sun.reflect.GeneratedMethodAccessor772.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
	at org.gradle.internal.event.DefaultListenerManager$ListenerDetails.dispatch(DefaultListenerManager.java:398)
	at org.gradle.internal.event.DefaultListenerManager$ListenerDetails.dispatch(DefaultListenerManager.java:380)
	at org.gradle.internal.event.AbstractBroadcastDispatch.dispatch(AbstractBroadcastDispatch.java:61)
	at org.gradle.internal.event.DefaultListenerManager$EventBroadcast$ListenerDispatch.dispatch(DefaultListenerManager.java:368)
	at org.gradle.internal.event.DefaultListenerManager$EventBroadcast.dispatch(DefaultListenerManager.java:179)
	at org.gradle.internal.event.DefaultListenerManager$EventBroadcast.dispatch(DefaultListenerManager.java:153)
	at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
	at com.sun.proxy.$Proxy21.onBuildScopeListenerRegistration(Unknown Source)
	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph.notifyListenerRegistration(DefaultTaskExecutionGraph.java:299)
	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph.beforeTask(DefaultTaskExecutionGraph.java:266)
	at com.github.sherter.googlejavaformatgradleplugin.GoogleJavaFormatPlugin.apply(GoogleJavaFormatPlugin.groovy:41)
	at com.github.sherter.googlejavaformatgradleplugin.GoogleJavaFormatPlugin.apply(GoogleJavaFormatPlugin.groovy)

org.gradle.api.InvalidUserCodeException: Listener registration 'TaskExecutionGraph.beforeTask' by org.gradle.execution.taskgraph.DefaultTaskExecutionGraph@167d2e92 is unsupported.
	at org.gradle.configurationcache.initialization.DefaultConfigurationCacheProblemsListener.onBuildScopeListenerRegistration(ConfigurationCacheProblemsListener.kt:90)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
	at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
	at org.gradle.internal.event.DefaultListenerManager$ListenerDetails.dispatch(DefaultListenerManager.java:398)
	at org.gradle.internal.event.DefaultListenerManager$ListenerDetails.dispatch(DefaultListenerManager.java:380)
	at org.gradle.internal.event.AbstractBroadcastDispatch.dispatch(AbstractBroadcastDispatch.java:61)
	at org.gradle.internal.event.DefaultListenerManager$EventBroadcast$ListenerDispatch.dispatch(DefaultListenerManager.java:368)
	at org.gradle.internal.event.DefaultListenerManager$EventBroadcast.dispatch(DefaultListenerManager.java:179)
	at org.gradle.internal.event.DefaultListenerManager$EventBroadcast.dispatch(DefaultListenerManager.java:153)
	at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
	at com.sun.proxy.$Proxy21.onBuildScopeListenerRegistration(Unknown Source)
	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph.notifyListenerRegistration(DefaultTaskExecutionGraph.java:299)
	at org.gradle.execution.taskgraph.DefaultTaskExecutionGraph.beforeTask(DefaultTaskExecutionGraph.java:266)
	at com.github.sherter.googlejavaformatgradleplugin.GoogleJavaFormatPlugin.apply(GoogleJavaFormatPlugin.groovy:41)
	at com.github.sherter.googlejavaformatgradleplugin.GoogleJavaFormatPlugin.apply(GoogleJavaFormatPlugin.groovy)