Bump actions/checkout from 4.1.7 to 4.2.0 #4294

Job	Run time
deno-checks	8s
all-features	0s
clippy (ubuntu-20.04, --all-features)	3m 19s
clippy (macos-14, --all-features)	3m 30s
oldstable (ubuntu-20.04)	2m 27s
rustfmt	15s
clippy (windows-latest, --no-default-features -F extensions)	15m 54s
oldstable (macos-14)	2m 28s
shellcheck	8s
oldstable (windows-latest)	5m 29s
test-matrix (ubuntu-20.04)	5m 37s
test-matrix (macos-14)	4m 34s
test-matrix (windows-latest, --no-default-features -F extensions)	13m 30s
test	1s
	57m 20s

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