Test

ci: use Python 3.12 #924

Job	Run time
build-docs	1m 17s
lint-js	1m 12s
lint-python	2m 10s
build-pyinstaller	2m 26s
test-js (ubuntu-latest)	23s
test-js (macos-latest)	32s
test-py (ubuntu-latest, 3.12, py)	1m 56s
test-js (windows-latest)	1m 26s
test-py (ubuntu-latest, 3.12, old_deps)	1m 4s
test-py (ubuntu-latest, 3.8, py)	1m 4s
test-py (ubuntu-latest, 3.8, old_deps)	53s
test-py (macos-latest, 3.12, py)	2m 24s
test-py (macos-latest, 3.8, py)	3m 20s
test-py (windows-latest, 3.12, py)	3m 1s
test-py (windows-latest, 3.8, py)	1m 49s
	24m 57s

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