UpdateHeadPipelineForMergeRequestWorker should belong to Code Review
The following discussion from !34042 should be addressed:
- [ ] @fabiopitino started a [discussion](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/34042#note_605471515):
> TODO: open a follow-up issue to change this to worker to `code_review`
`UpdateHeadPipelineForMergeRequestWorker` currently has `continuous_integration` feature category but it should be `code_review`.
issue