chore: Update to actions/checkout@v4 #2322

Job	Run time
codegen	19s
cargo-deny check	22s
Check unused dependencies (ubuntu-latest)	3m 46s
check (ubuntu-latest)	51s
Check unused dependencies (macOS-latest)	9m 52s
check (macOS-latest)	2m 4s
Check MSRV	43s
Check unused dependencies (windows-latest)	6m 31s
Interop Tests (ubuntu-latest)	39s
check (windows-latest)	1m 58s
Interop Tests (macOS-latest)	1m 6s
Interop Tests (windows-latest)	2m 3s
test (ubuntu-latest)	2m 50s
rustfmt	13s
test (macOS-latest)	3m 7s
test (windows-latest)	4m 10s
	40m 34s

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