add Python 3.12 tests

[CagtayFabry]

Changes

• add Python 3.12 to pytest runs
• switch Python 3.9 -> 3.10 in some default runs

Related Issues

Checks

• [ ] updated CHANGELOG.md
• [ ] updated tests/
• [ ] updated doc/
• [ ] update example/tutorial notebooks
• [ ] update manifest file

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 96.48%. Comparing base (5ad2929) to head (1e23357). Report is 6 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #896 +/- ## ======================================= Coverage 96.48% 96.48% ======================================= Files 95 95 Lines 6293 6293 ======================================= Hits 6072 6072 Misses 221 221 ```

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[github-actions[bot]]

Test Results

2 188 tests  ±0   2 187 :white_check_mark: ±0   2m 49s :stopwatch: -1s     1 suites ±0       1 :zzz: ±0      1 files   ±0       0 :x: ±0 

Results for commit 1e23357a. ± Comparison against base commit 0e0a9ea1.

:recycle: This comment has been updated with latest results.