chore(deps): update dependency google-cloud-pubsub to v2.13.1 (#476)

Author: renovate-bot

background/app/requirements.txt

@@ -1,3 +1,3 @@
 google-cloud-firestore==2.5.3
-google-cloud-pubsub==2.13.0
+google-cloud-pubsub==2.13.1
 flask==2.1.2