Needs approval from an approver in each of these files:
- ~~[OWNERS](https://github.com/knative-sandbox/kn-plugin-admin/blob/main/OWNERS)~~ [rhuss]
Approvers can indicate their approval by writing `/approve` in a comment
Approvers can cancel approval by writing `/approve cancel` in a comment
Convert CODEOWNERS to OWNERS files per https://github.com/knative/test-infra/issues/2751.
Do not delete CODEOWNERS until the migration is complete and Prow is switched back.