Python 3.11 wheels

[dstansby]

A short feature request for Python 3.11 wheels to be built/uploaded 😃

[anntzer]

This is currently blocked by the tests being broken with matplotlib 3.8. I'd like to fix that first, but am very unlikely to have time to work on that any time soon.
As a stopgap I could accept a PR that just updates run-mpl-test-suite.py to xfail all the problematic tests and tag that as 0.5.1.

[nabobalis]

Hello @anntzer, I have a similar question for wheels for py312.

What can I do to help and try to get wheels out for that?

[anntzer]

Unfortunately, my bandwidth for working on mplcairo infrastructure is close to none these days (compiling from source should always work, and HEAD should always be in a usable state as I still use this backend for regular work). It would be nice if a core dev of an established scientific python package could get interested in helping with the maintenance here. (It doesn't have to be a Matplotlib core dev but I'd much rather have someone already reasonably well-established in the scientific python community, to avoid xz-style debacles.)