Needs approval from an approver in each of these files:
- ~~[OWNERS](https://github.com/GoogleCloudPlatform/artifact-registry-yum-plugin/blob/main/OWNERS)~~ [hopkiw,illfelder]
Approvers can indicate their approval by writing `/approve` in a comment
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specify cloud-platform scope when initializing JSON credentials, leaving all permissions management at the IAM layer