There's a merged pull request on the void-packages repository

Drop Python2 from cachetools, google-auth, google-auth-httplib2, google-api-python-client
https://github.com/void-linux/void-packages/pull/17663

Description:
This drops Python2 support from the following packages:

- python-cachetools
- python-google-auth
- python-google-auth-httplib2
- python-google-api-python-client

The Python3 versions are updated if there is a newer version (cachetools, google-auth).