chore(ci): update to actions/checkout@v5 #3052

Job	Run time
Verify hyper.h is up to date	26s
semver	21s
Check Style	14s
Check MSRV	26s
minimal-versions	26s
Test stable on windows-latest	2m 2s
udeps	24s
Test stable on ubuntu-latest	1m 0s
Test stable on macOS-latest	1m 18s
Test beta on ubuntu-latest	50s
features	31s
Test nightly on macOS-latest	1m 15s
Test with Miri	2m 19s
Test nightly on ubuntu-latest	53s
Test C API (FFI)	33s
Test nightly on windows-latest	2m 21s
Test beta on windows-latest	2m 2s
Test beta on macOS-latest	1m 11s
Test cargo-c support (FFI)	13s
Build docs	17s
Check exposed types	18s
CI is green	3s
	19m 23s

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