Bump actions/checkout from 4 to 5 #71

Job	Run time
build (ubuntu-latest, 29.4, false)	1m 24s
build (ubuntu-latest, 30.2, false)	1m 26s
build (macos-latest, 28.2, false)	4m 21s
build (windows-latest, 30.2, false)	1h 41m 18s
build (macos-latest, snapshot, true)	4m 4s
build (windows-latest, snapshot, true)	38m 20s
build (ubuntu-latest, snapshot, true)	1m 17s
build (macos-latest, 29.4, false)	3m 24s
build (ubuntu-latest, 28.2, false)	1m 39s
build (windows-latest, 28.2, false)	43m 8s
build (windows-latest, 29.4, false)	1h 32m 21s
build (macos-latest, 30.2, false)	4m 39s
	4h 57m 21s

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