Add [skip ci] when tagging
What does this MR do?
Stops CI from being executing when tagging.
Context
Tagging EE, is currently triggering a merge train to sync changes to GitLab-FOSS, which causes repositories to be out of sync just before tagging process is finished.
Detecting this on merge train might be a difficult task, so we opted for adding skip ci when tagging, just like we do when adding the changelog.
Related to https://gitlab.com/gitlab-org/release-tools/issues/358
Edited by Mayra Cabrera