API for editing mirror tokens
<!--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=9440) </details> <!--IssueSummary end--> ### Problem to solve Due to #9147, it'd be nice to have a way to change out the token used. Currently, the only way to do this is to remove the mirroring and re-import. ### Target audience People using CI/CD for external repos in github. https://gitlab.zendesk.com/agent/tickets/112640 (for internal use)
issue