<!--IssueSummary start--> <details> <summary> Everyone can contribute. [Help move this issue forward](https://handbook.gitlab.com/handbook/marketing/developer-relations/contributor-success/community-contributors-workflows/#contributor-links) while earning points, leveling up and collecting rewards. </summary> - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=19970) </details> <!--IssueSummary end--> ### Description Add Slack notification for label changes ### Proposal Slack notifications are not currently sent for updates to issues or merge requests This issue proposes that label changes to issues or merge requests should send a slack notification ### Links / references