Add Python 3.11 and 3.12 to Windows and MacOS matrices

[A5rocks]

Part of: #2885

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.63%. Comparing base (451393a) to head (b06b544).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3017   +/-   ##
=======================================
  Coverage   99.63%   99.63%           
=======================================
  Files         120      120           
  Lines       17863    17863           
  Branches     3217     3217           
=======================================
  Hits        17798    17798           
  Misses         46       46           
  Partials       19       19           

Files with missing lines	Coverage Δ
src/trio/socket.py	100.00% <ø> (ø)

[A5rocks]

Oh, turns out the github branch rename feature doesn't work. Oh well

[A5rocks]

pre-commit.ci autofix

[CoolCat467]

Looks good to me, simple enough

[jakkdl]

Huh, did we just forget to add these when adding 3.11/3.12 - or was something broken that now works? Not that it matters, good stuff.

[A5rocks]

It looks like I added 3.12 at least and while I can't remember exactly, I'm pretty sure I just forgot to add it to Windows/MacOS (because step 1 was adding 3.12-dev which we handle using a PPA, then step 2 (where I forgot) is just removing -dev)