Bump actions/checkout from 3 to 4 #1099

Job	Run time
Check for duplicate workflows	4s
Build (8, windows-latest)	1m 25s
Build (8, ubuntu-latest)	42s
Build (11, windows-latest)	1m 24s
Build (11, ubuntu-latest)	39s
Build (17, windows-latest)	1m 31s
Build (17, ubuntu-latest)	45s
Test (8, windows-latest)	2m 40s
Test (8, ubuntu-latest)	1m 48s
Test (11, windows-latest)	2m 52s
Test (11, ubuntu-latest)	1m 50s
Test (17, windows-latest)	2m 50s
Test (17, ubuntu-latest)	1m 52s
Publish	0s
	20m 22s

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