build(deps): bump actions/checkout from 2 to 4 #468

Job	Run time
hw nightly debug *	47s
hw nightly release *	47s
sw 1.67 debug	3m 31s
sw 1.67 release	3m 29s
sw 1.67 debug openssl	3m 30s
sw 1.67 release openssl	3m 29s
sw stable debug	18s
sw stable release	8s
sw stable debug openssl	13s
sw stable release openssl	23s
sw beta debug	15s
sw beta release	16s
sw beta debug openssl	19s
sw beta release openssl	22s
sw nightly debug	16s
sw nightly release	15s
sw nightly debug openssl	20s
sw nightly release openssl	25s
sw nightly debug rcrypto	22s
sw nightly release rcrypto	28s
sw nightly debug rcrypto,openssl	25s
sw nightly release rcrypto,openssl	30s
	20m 48s

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