latest master image returns invalid manifest type for github packages

[76creates]

Since we have updated image-updater to latest tag sha256:ce1a5fc8647056743daa415e91374370f82a12e49d112f61ed296f74589f3407 our images with digest update strategy were having trouble updating from GitHub container repo.

Errors reported were like:

time="2023-08-16T08:40:28Z" level=error msg="error fetching metadata for <redacted>:latest: invalid manifest type" alias=foo application=<redacted> image_name=<redacted> image_tag="sha256:<sha>" registry=ghcr.io

Sample annotations:

argocd-image-updater.argoproj.io/image-list:controller=ghcr.io/<redacted>:latest
argocd-image-updater.argoproj.io/controller.pull-secret: pullsecret:argocd/ghcr-registry
argocd-image-updater.argoproj.io/controller.update-strategy: digest

I set branch to `release-0.12. and since reverting it seams to be working in the stable release.

It would be good to know if this is expected behaviour, and if yes, it would be useful to have some context in regards of what to do in this case?

Thanks!