chore(deps): update taiki-e/install-action digest to 56ab793 #298

Job	Run time
Cross checking x86_64-pc-windows-msvc	2m 5s
Cross checking x86_64-pc-windows-gnu	2m 0s
Cross checking x86_64-apple-darwin	5m 7s
Cross checking aarch64-apple-darwin	54s
Cross checking x86_64-unknown-linux-gnu	3m 53s
Cross checking x86_64-unknown-linux-musl	1m 9s
Cross checking aarch64-unknown-linux-gnu	4m 38s
Cross checking i686-unknown-linux-gnu	4m 48s
Cross checking x86_64-unknown-netbsd	5m 11s
Cross checking armv7-unknown-linux-gnueabihf	4m 58s
Result (Cross-CI)	1s
	34m 44s

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