chore(deps): update dependency absl-py to v0.15.0 (#523)
chore(deps): update dependency absl-py to v0.15.0 (#523)

Co-authored-by: Karl Weinmeister <3ebe93087b83aa638dc894ed26df6e32ac30648f@users.noreply.github.com>
Co-authored-by: nicain <0a042ec20e44caa112e3332faff907c3f63f31a1@gmail.com>
GoogleCloudPlatform/cloudml-samples,GoogleCloudPlatform/cloudml-samples