feat: Add ARM64 support

[JorTurFer]

Signed-off-by: Jorge Turrado [email protected]

This PR adds the necessary flows to generate ARM64 images in every push to main (canary tag) and also on every tag pushed to the repo. This PR also adds to e2e test the ARM execution on several k8s versions

Checklist

• Commits are signed with Developer Certificate of Origin (DCO)

Fixes #364

[tomkerkhove]

LGTM, thanks a ton!

[morganchristiansson]

Also need to upgrade kube-rbac-proxy container image. https://github.com/kedacore/charts/blob/main/http-add-on/values.yaml#L145

Multi-arch was added in 0.6.0 but chart is using 0.5.0. https://github.com/brancz/kube-rbac-proxy/releases

0.6.0 and 0.7.0 are missing from image registry so can use 0.8.0 https://console.cloud.google.com/gcr/images/kubebuilder/global/kube-rbac-proxy?tag=v0.8.0

[JorTurFer]

wow!
Thanks for reporting this because we are planning a new release (which would be wrong without this change).
I'm going to update this ASAP 🙇

[JorTurFer]

Thanks for reporting the issue @morganchristiansson
This PR updates it to latest (I have tested it in my M1, and it works with prometheus operator correctly)

[morganchristiansson]

Excellent! Thank you for tagging a new release! My keda has in the past broken because it was left on canary image and new changes were merged.