chore(deps): update dependency httplib2 to v0.20.4 (#7424)
chore(deps): update dependency httplib2 to v0.20.4 (#7424)


GoogleCloudPlatform/python-docs-samples,GoogleCloudPlatform/python-docs-samples,GoogleCloudPlatform/python-docs-samples,GoogleCloudPlatform/python-docs-samples