Merge pull request #46690 from neersighted/buildkit_0.12.3 #138

Job	Run time
validate-dco / run	28s
build	2m 50s
test (dockerd, client, integration)	19m 42s
test (dockerd, cmd/buildctl, integration)	10m 9s
test (dockerd, solver, integration)	11m 41s
test (dockerd, frontend, integration)	11m 58s
test (dockerd, frontend/dockerfile, integration)	23m 13s
test (dockerd-containerd, client, integration)	21m 18s
test (dockerd-containerd, cmd/buildctl, integration)	10m 23s
test (dockerd-containerd, solver, integration)	13m 8s
test (dockerd-containerd, frontend, integration)	10m 34s
test (dockerd-containerd, frontend/dockerfile, integration)	23m 31s
	2h 38m 55s

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