[python-committers] Starting the release of Python 3.11.0b4

Hi everyone,

As a heads up: I'm starting the release of Python 3.11.0b4 and to avoid complicating things I have blocked the 3.11 branch until the release finishes so don't worry if you are not able to merge stuff in the 3.11 branch: nobody as removed your committer powers :)

Cheers from sunny London, Pablo Galindo Salgado