chore(deps): update dependency google-cloud-asset to v1.3.0 [(#4174)](GoogleCloudPlatform/python-docs-samples#4174)

Author: renovate-bot

samples/snippets/requirements.txt

@@ -1,5 +1,5 @@
 google-cloud-storage==1.29.0
-google-cloud-asset==1.2.0
+google-cloud-asset==1.3.0
 google-cloud-resource-manager==0.30.2
 google-cloud-pubsub==1.6.0
 google-cloud-bigquery==1.25.0