Automatic merge from submit-queue
Fix staging godeps for k8s.io/metrics and k8s.io/kube-gen
**What this PR does / why we need it**:
#49095 introduced an issue with the formatting of the k8s.io/metrics staging godeps. This fixes that issue, and alters the script to prevent it from happening again.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
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