Add sharding_key to abuse_events table definition
<!--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> - [Label this issue](https://contributors.gitlab.com/manage-issue?action=label&projectId=278964&issueIid=561729) - [Close this issue](https://contributors.gitlab.com/manage-issue?action=close&projectId=278964&issueIid=561729) </details> <!--IssueSummary end--> Change table yaml file to include correct sharding key (`organization_id`)
task