Tests

build: Switch docs workflow to official GitHub actions #387

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Run time

Learn about OS # on GitHub Actions

Job	Run time
test (ubuntu-latest, 3.8)	44s
test (ubuntu-latest, 3.9)	44s
test (ubuntu-latest, 3.10)	50s
test (ubuntu-latest, 3.11)	44s
test (ubuntu-latest, 3.12)	50s
test (macos-latest, 3.8)	1m 21s
test (macos-latest, 3.12)	42s
test (windows-latest, 3.8)	1m 17s
test (windows-latest, 3.12)	1m 10s
	8m 22s