chore(deps): update dependency google-cloud-secret-manager to v2.15.1 (#393)

Author: renovate-bot

packages/google-cloud-secret-manager/samples/snippets/requirements.txt

@@ -1,2 +1,2 @@
-google-cloud-secret-manager==2.15.0
+google-cloud-secret-manager==2.15.1
 google-crc32c==1.5.0