github actions: docker image latest tag is not linked to 4.2.x

[edevosc2c]

When a new docker image is built for the docker tag 4.2.x and latest, only the tag 4.2.x will get the new modification. There is a need to execute again the github action for the tag latest to have the same modification as the tag 4.2.x.

There is probably an issue for the command here: https://github.com/georchestra/geonetwork/blob/georchestra-gn4.2.x/.github/workflows/georchestra-gn4.yml#L80 but I can't find the way to solve the issue.

Probably related to #224

[jeanpommier]

Looking at the GH action logs, the docker tag command seems fine (the signature is the same for the branch tag and latest). Weird