Auto-update dependencies. [(#1377)](https://github.com/GoogleCloudPlatform/python-docs-samples/issues/1377)
Auto-update dependencies. [(#1377)](https://github.com/GoogleCloudPlatform/python-docs-samples/issues/1377)

* Auto-update dependencies.

* Update requirements.txt

googleapis/python-videointelligence,googleapis/python-videointelligence