I came across this question about a GitHub action in a monorepo and it was tagged with cicd and continuous-integration. Because it involves GitHub actions, it naturally involves CI but not necessarily CD.
I'd say the real question is: shoudl cicd be burninated as it is a meta tag encompassing the two others.
Now in term of usage, peoples are more likely to tags things with cicd and I assume watcher of these 3 tags overlap at nearly 100%, so in term of user-friendlyness, I'd let it as is and don't removed tags overzealously unless they are totally unrelated.
I was on the fence about rejecting your edit, removing the git where the problem is specifically aroung committing within github action is kind of harming the question. Adding monorepo is debatable but does no harm, adding github-action is a great addition.
Back to cicd in this case the problem is around preparing the deployment files for kubernetes, so it is absolutely about conitnuous devivery, the fact the author didn't expose its deploy job coming later doesn't mean there's none.
So at the end of the day, I'd avoid removing this tag unless the question is neither about CI or CD.