Docs pipeline no longer runs
Overview
Since we closed #5070 (closed) and enabled pipelines for merge results our pipelines for docs don't work anymore for example https://gitlab.com/gitlab-org/gitlab-runner/pipelines/107866614. The pipelines for documentation changes should look like !1727 (merged).
This is because we are using except
on the ref name and since the ref name change because it's merging the branch with master.
Proposal
Use a combination of workflow:rules
rules:changes
something similar to what we have in https://gitlab.com/gitlab-org/gitlab/blob/c6ef87c561cb44819bb18ae7debfbf2bbf07480e/.gitlab/ci/docs.gitlab-ci.yml
Edited by Steve Xuereb