build(deps): bump actions/checkout from 3 to 4 #265

Job	Run time
test-windows	3m 23s
check_features (ubuntu-latest)	47s
clippy (ubuntu-latest)	1m 7s
check_features (macos-latest)	1m 42s
integration-tests (ubuntu-latest)	2m 7s
clippy (macos-latest)	1m 29s
integration-tests (macos-latest)	1m 54s
rustfmt (ubuntu-latest)	7s
tests (ubuntu-latest)	1m 26s
rustfmt (macos-latest)	18s
tests (macos-latest)	2m 4s
all-systems-go	2s
	16m 26s

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