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Bump actions/upload-artifact from 3 to 4 #28

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Run time

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Job	Run time
Build (linux, amd64, glibc)	20s
Build (linux, amd64, musl)	29s
Build (linux, 386, glibc)	13s
Build (linux, 386, musl)	31s
Build (linux, arm64, glibc)	10s
Build (linux, arm64, musl)	40s
Build (linux, arm, glibc)	9s
Build (linux, arm, musl)	26s
Build (windows, amd64)	14s
Build (windows, 386)	13s
Build (windows, arm64)	16s
Build (windows, arm)	8s
Release	0s
	3m 49s