Add a GHA target for darwin/arm64
Add a GHA target for darwin/arm64

Signed-off-by: David Gageot <08163a487c3cf8b3df0185d0b33165aabac2e16a@docker.com>

JohnnyLeone/linuxkit,linuxkit/linuxkit,deitch/linuxkit,deitch/linuxkit,JohnnyLeone/linuxkit,deitch/linuxkit,JohnnyLeone/linuxkit,linuxkit/linuxkit,deitch/linuxkit,linuxkit/linuxkit,JohnnyLeone/linuxkit,linuxkit/linuxkit,linuxkit/linuxkit,JohnnyLeone/linuxkit,deitch/linuxkit