chore(deps): update dependency google-cloud-pubsub to v2.9.0 (#100)

Author: renovate-bot

contact-center-insights/snippets/requirements-test.txt

@@ -1,4 +1,4 @@
 google-auth==2.3.3
-google-cloud-pubsub==2.8.0
+google-cloud-pubsub==2.9.0
 protobuf==3.19.1
 pytest==6.2.5