chore(deps): update actions/checkout action to v4 #4600

Job	Run time
rustfmt-clippy	2m 31s
build-windows (cargo-build, x86_64-pc-windows-msvc)	10m 34s
build-windows (cargo-test, x86_64-pc-windows-msvc)	16m 17s
build-windows (cargo-c, x86_64-pc-windows-gnu)	15m 34s
build-unix (beta-build)	4m 33s
build-unix (1.65.0-tests)	12m 55s
build-unix (aom-tests)	8m 39s
build-unix (dav1d-tests)	8m 51s
build-unix (no-asm-tests)	18m 7s
build-unix (grcov-codecov)	15m 9s
build-unix (bench)	6m 13s
build-unix (doc)	5m 0s
build-unix (cargo-c)	6m 43s
build-unix (check-no-default)	4m 15s
build-unix (check-extra-feats)	5m 55s
build-unix (check-unstable-feats)	5m 37s
build-unix (fuzz)	7m 0s
build-unix (dav1d-tests-arm64, stable)	13m 44s
build-macos (Cargo build (x64), cargo-build, x86_64-apple-darwin)	5m 9s
build-macos (Cargo test (x64), cargo-test, x86_64-apple-darwin)	8m 14s
build-macos (Cargo C-build (x64), cargo-c, x86_64-apple-darwin)	7m 29s
build-macos (Cargo build (Arm64), cargo-build, aarch64-apple-darwin)	4m 19s
build-macos (Cargo C-build (Arm64), cargo-c, aarch64-apple-darwin)	7m 29s
	3h 20m 17s

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