Bump actions/setup-go from 4 to 5 #12

Job	Run time
build (windows, amd64)	25s
build (windows, 386)	20s
build (freebsd, amd64)	19s
build (freebsd, 386)	26s
build (openbsd, amd64)	33s
build (openbsd, 386)	29s
build (linux, amd64)	23s
build (linux, 386)	20s
build (dragonfly, amd64)	16s
build (darwin, amd64)	17s
build (darwin, arm64)	26s
build (linux, arm, 7)	25s
build (linux, arm, 6)	17s
build (linux, arm, 5)	21s
build (android, arm64)	8s
build (windows, arm64)	26s
build (windows, arm, 7)	17s
build (linux, arm64)	22s
build (linux, riscv64)	20s
build (linux, mips64)	21s
build (linux, mips64le)	21s
build (linux, mipsle)	28s
build (linux, mips)	17s
build (linux, mipsle, softfloat)	27s
build (linux, mips, softfloat)	28s
build (linux, ppc64)	26s
build (linux, ppc64le)	21s
build (freebsd, arm64)	21s
build (freebsd, arm, 7)	22s
build (linux, s390x)	17s
build (openbsd, arm64)	32s
build (openbsd, arm, 7)	29s
	12m 0s

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