chore(deps): update dependency sphinx-rtd-theme to v0.5.2 (#5952)
chore(deps): update dependency sphinx-rtd-theme to v0.5.2 (#5952)


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