build(deps): update dependency org.apache.maven.plugins:maven-checkstyle-plugin to v3.2.2

[renovate-bot]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
org.apache.maven.plugins:maven-checkstyle-plugin	3.2.1 -> 3.2.2

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[emmileaf]

Kokoro - Test: Integration

[INFO] Running com.google.cloud.pubsub.v1.SubscriberTest
Apr 20, 2023 8:47:17 PM com.google.cloud.pubsub.v1.StreamingSubscriberConnection$1 onFailure
SEVERE: terminated streaming with exception
com.google.api.gax.rpc.UnavailableException: com.google.api.gax.rpc.UnavailableException: io.grpc.StatusRuntimeException: UNAVAILABLE: Server shutdownNow invoked
	at com.google.api.gax.rpc.ApiExceptionFactory.createException(ApiExceptionFactory.java:112)
	at com.google.api.gax.rpc.ApiExceptionFactory.createException(ApiExceptionFactory.java:41)
	at com.google.cloud.pubsub.v1.StreamingSubscriberConnection$1.onFailure(StreamingSubscriberConnection.java:340)
	at com.google.api.core.ApiFutures$1.onFailure(ApiFutures.java:84)