ci: enable archutil-arm64 job #4751

Job	Run time
prepare	1s
test / prepare	2m 3s
test / run (containerd, ./frontend/dockerfile, integration)	11m 0s
test / run (containerd, ./frontend/dockerfile, dockerfile)	17m 7s
test / run (containerd-rootless, ./frontend/dockerfile, integration)	11m 15s
test / run (containerd-rootless, ./frontend/dockerfile, dockerfile)	16m 59s
test / run (containerd-1.6, ./frontend/dockerfile, integration)	4m 50s
test / run (containerd-1.6, ./frontend/dockerfile, dockerfile)	17m 38s
test / run (containerd-snapshotter-stargz, ./frontend/dockerfile, integration)	5m 4s
test / run (containerd-snapshotter-stargz, ./frontend/dockerfile, dockerfile)	19m 32s
test / run (oci, ./frontend/dockerfile, integration)	9m 29s
test / run (oci, ./frontend/dockerfile, dockerfile)	18m 44s
test / run (oci-rootless, ./frontend/dockerfile, integration)	10m 29s
test / run (oci-rootless, ./frontend/dockerfile, dockerfile)	15m 47s
test / run (oci-rootless-slirp4netns-detachnetns, ./frontend/dockerfile, integration)	9m 47s
test / run (oci-rootless-slirp4netns-detachnetns, ./frontend/dockerfile, dockerfile)	7m 55s
test / run (oci-snapshotter-stargz, ./frontend/dockerfile, integration)	9m 36s
test / run (oci-snapshotter-stargz, ./frontend/dockerfile, dockerfile)	18m 43s
image (mainline)	5m 3s
image (labs)	4m 59s
release	0s
scout	0s
	3h 36m 1s

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