chore: include generated samples dir (#19)

* chore: include generated samples dir

* 🦉 Updates from OwlBot post-processor

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

java-gke-backup/.github/.OwlBot.yaml

@@ -16,6 +16,7 @@ docker:
   image: "gcr.io/cloud-devrel-public-resources/owlbot-java:latest"
 
 deep-remove-regex:
+- "/samples/snippets/generated"
 - "/grpc-google-.*/src"
 - "/proto-google-.*/src"
 - "/google-.*/src"
@@ -30,3 +31,5 @@ deep-copy-regex:
   dest: "/owl-bot-staging/$1/grpc-google-cloud-gke-backup-$1/src"
 - source: "/google/cloud/gkebackup/(v.*)/.*-java/gapic-google-.*/src"
   dest: "/owl-bot-staging/$1/google-cloud-gke-backup/src"
+- source: "/google/cloud/gkebackup/(v.*)/.*-java/samples/snippets/generated"
+  dest: "/owl-bot-staging/$1/samples/snippets/generated"