chore(deps): update dependency google-auth to v1.19.1 [(#4304)](https://github.com/GoogleCloudPlatform/python-docs-samples/issues/4304)
chore(deps): update dependency google-auth to v1.19.1 [(#4304)](https://github.com/GoogleCloudPlatform/python-docs-samples/issues/4304)


googleapis/python-bigquery-storage,googleapis/python-bigquery-storage