fix: prevent regeneration of Version.java

Author: diegomarquezp

.github/.OwlBot-hermetic.yaml

@@ -17,6 +17,7 @@ deep-remove-regex:
 
 deep-preserve-regex:
 - "/google-.*/src/test/java/com/google/cloud/.*/v.*/it/IT.*Test.java"
+- "/google-.*/src/main/java/com/google/cloud/.*/v.*/stub/Version.java"
 
 deep-copy-regex:
 - source: "/google/bigtable/(v\\d)/.*-java/proto-google-.*/src"