Chore(deps): Bump actions/checkout from 6 to 7 #5024

Job	Run time
site (Java 17)	1m 36s
build-only (Java 17)	37s
test Java 11 (no-build)	1m 8s
test Java 8 (no-build)	55s
test (windows, Java 21)	14m 27s
test (ubuntu, Java 17)	13m 58s
test (windows, Java 17)	14m 26s
test (ubuntu, Java 21)	14m 8s
codecov-upload (Upload to codecov.io)	12s
	1h 1m 27s

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