chore(deps): update taiki-e/install-action digest to 6a4015d #1653

Job	Run time
Cross-compile to aarch64	1m 18s
Build and test core crates (ubuntu-latest, 1.78)	1m 44s
Build and test (all features) (ubuntu-latest, 1.78)	2m 54s
Build and test core crates (ubuntu-latest, stable)	1m 32s
Build and test (all features) (ubuntu-latest, stable)	2m 34s
Build documentation (ubuntu-latest)	1m 2s
Lint	1m 20s
Build and test core crates (macos-14, 1.78)	1m 41s
Build and test (all features) (macos-14, 1.78)	2m 33s
Build and test core crates (macos-14, stable)	1m 26s
Build and test (all features) (macos-14, stable)	2m 40s
cargo-compare extended tests (ubuntu-latest)	46s
Build and test core crates (windows-latest, 1.78)	3m 46s
Build and test (all features) (windows-latest, 1.78)	6m 51s
cargo-compare extended tests (macos-14)	53s
Build and test (all features) (windows-latest, stable)	5m 19s
Build and test core crates (windows-latest, stable)	4m 5s
	42m 24s

Provide feedback