MAINT: test AmpForm on Python 3.12 #242

Job	Run time
pytest / Determine job matrix	4s
style / Determine skipped pre-commit hooks	6s
doc / nb / Execute and build documentation	3m 24s
doc / linkcheck / Check external links	1m 41s
pytest / Run unit tests (3.10, ubuntu-22.04)	1m 2s
pytest / Run unit tests (3.11, ubuntu-22.04)	51s
pytest / Run unit tests (3.12, ubuntu-22.04)	1m 10s
pytest / Run unit tests (3.7, ubuntu-22.04)	1m 8s
pytest / Run unit tests (3.9, ubuntu-22.04)	1m 2s
pytest / Run unit tests (3.8, ubuntu-22.04, ampform)	1m 51s
pytest / Run unit tests (3.9, macos-12)	2m 21s
style / Run local pre-commit hooks	1m 51s
style / Run taplo through pre-commit	24s
style / Push changes	0s
doc / Upload to GitHub Pages	0s
	16m 55s

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