Add support for Python 3.11-3.12, drop EOL 3.7

[hugovk]

• [x] I'm acknowledging that my submission is free of all known copyright in at least the United States. (In general, works of the federal government should satisfy this criteria.)

Also update pre-commit and GitHub Actions.

[codecov-commenter]

Codecov Report

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

Comparison is base (2f3d436) 57.42% compared to head (9b19f03) 57.42%.

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## gh-pages #219 +/- ## ========================================= Coverage 57.42% 57.42% ========================================= Files 2 2 Lines 101 101 ========================================= Hits 58 58 Misses 43 43 ```

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