[pip] Update dependencies and fix batch docs search

[daniel-goldstein]

The search bar for the batch docs is broken and just says Searching… forever. Tracked it down to a bug in the sphinx_rtd_theme dependency that was fixed in a later release. The important files to look at are the requirements.txt files not the pinned-requirements.txt files as the latter bulk updated a bunch of patch releases when I regenerated them. In the mess of version conflicts that updating a dependency appears to do here, I also removed google-cloud-logging as it appears to be an unused dependency and pre-commit because it is optional for developers and had a hard requirement on a importlib-metadata version that made it incompatible with other important libraries that we use.