Test

ci: use Python 3.12 #926

Job	Run time
build-docs	1m 31s
build-pyinstaller	2m 33s
lint-js	1m 29s
lint-python	1m 37s
test-js (ubuntu-latest)	16s
test-js (macos-latest)	31s
test-py (ubuntu-latest, 3.12, py)	1m 47s
test-js (windows-latest)	1m 31s
test-py (ubuntu-latest, 3.12, old_deps)	59s
test-py (ubuntu-latest, 3.8, py)	1m 1s
test-py (ubuntu-latest, 3.8, old_deps)	50s
test-py (macos-latest, 3.12, py)	1m 47s
test-py (macos-latest, 3.8, py)	1m 20s
test-py (windows-latest, 3.12, py)	3m 54s
test-py (windows-latest, 3.8, py)	1m 38s
	22m 44s

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