Merge branch 'main' into generate-libraries-main

Author: lqiu96

.github/.OwlBot-hermetic.yaml

@@ -68,6 +68,7 @@ deep-preserve-regex:
 - "/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/SubscriberShutdownSettings.java"
 - "/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/SubscriberStats.java"
 - "/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/Waiter.java"
+- "/google-cloud-pubsub/src/main/java/com/google/cloud/pubsub/v1/LoggingUtil.java"
 
 deep-copy-regex:
 - source: "/google/pubsub/(v.*)/.*-java/proto-google-.*/src"