New GitHub personal access tokens won't work

[ryanshoover]

https://github.blog/2022-10-18-introducing-fine-grained-personal-access-tokens-for-github/

The new fine grained tokens match regex ^github_pat_[a-zA-Z0-9]{22}_[a-zA-Z0-9]{59}$

Similar to #374, we need to update our regex to support the new PATs. We should also provide guidance what level of fine-grained control Build Tools needs to do its work.