chore(deps): update dependency google-cloud-storage to v1.29.0 [(#4040)](GoogleCloudPlatform/python-docs-samples#4040)

Author: renovate-bot

samples/snippets/requirements.txt

@@ -1,2 +1,2 @@
 google-cloud-automl==0.10.0
-google-cloud-storage==1.28.1
+google-cloud-storage==1.29.0