Currently, PRs on the 3.9 branch of Python only gets 1 CI (Travis CI) + 3 bots. Example:
python/cpython#20228

Whereas PRs on 3.8 branch of Python get 8 CIs + 3 bots. Example:
python/cpython#20191

Would it be possible to enable GitHub Action jobs on the 3.9 branch? cc @Mariatta @ambv @pablogsal

Also: How can we enable Azure Pipelines on 3.9? cc @brettcannon @zooba