Add Python 3.12 to CI tests

[djhoese]

• [ ] Closes #xxxx
• [ ] Tests added
• [ ] Tests passed
• [ ] Passes git diff origin/main **/*py | flake8 --diff
• [ ] Fully documented

[djhoese]

Gotta wait for PROJ 9.3.1 to be released.

[djhoese]

pre-commit.ci autofix

[codecov[bot]]

Codecov Report

Merging #549 (9b23d84) into main (c0025ed) will decrease coverage by 0.15%. Report is 2 commits behind head on main. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #549      +/-   ##
==========================================
- Coverage   94.25%   94.11%   -0.15%     
==========================================
  Files          82       82              
  Lines       13076    13078       +2     
==========================================
- Hits        12325    12308      -17     
- Misses        751      770      +19     

Flag	Coverage Δ
unittests	94.11% <100.00%> (-0.15%)	:arrow_down:

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
pyresample/test/test_utils.py	96.53% <100.00%> (-2.85%)	:arrow_down:

... and 3 files with indirect coverage changes