chore(deps): update python docker tag to v2.7.16 (#521)
chore(deps): update python docker tag to v2.7.16 (#521)

Co-authored-by: Karl Weinmeister <3ebe93087b83aa638dc894ed26df6e32ac30648f@users.noreply.github.com>
GoogleCloudPlatform/cloudml-samples,GoogleCloudPlatform/cloudml-samples