Back to pull request #119

Upgrade: Bump actions/checkout from 3 to 4 #330

# to view logs

Run time

Learn about OS # on GitHub Actions

Job	Run time
test (ubuntu-latest, lts/*)	11m 15s
test (ubuntu-latest, 18)	11m 33s
test (windows-latest, lts/*)	15m 15s
test (windows-latest, 18)	15m 12s
test (macos-latest, lts/*)	13m 33s
test (macos-latest, 18)	13m 28s
automerge	3s
	1h 20m 19s