chore(deps): update dependency google-cloud-pubsub to v2.14.0 (#538)

Co-authored-by: Anthonios Partheniou <partheniou@google.com>

Author: renovate-bot

packages/google-cloud-asset/samples/snippets/requirements.txt

@@ -1,5 +1,5 @@
 google-cloud-storage==2.7.0
 google-cloud-asset==3.17.0
 google-cloud-resource-manager==1.8.0
-google-cloud-pubsub==2.13.12
+google-cloud-pubsub==2.14.0
 google-cloud-bigquery==3.4.2