chore(deps): update dependency google-cloud-pubsub to v2.9.0 (#336)

Author: renovate-bot

asset/snippets/snippets/requirements.txt

@@ -1,5 +1,5 @@
 google-cloud-storage==1.42.3
 google-cloud-asset==3.7.1
 google-cloud-resource-manager==1.3.2
-google-cloud-pubsub==2.8.0
+google-cloud-pubsub==2.9.0
 google-cloud-bigquery==2.30.1