Failing job post-kubetest2-push-binaries

[elieser1101]

What happened:
The post-kubetest2-push-binaries Job is failing

What you expected to happen:
Job succeeds

How to reproduce it (as minimally and precisely as possible):
After merging stuff into kubetest2 we got the failing job

Please provide links to example occurrences, if any:
https://prow.k8s.io/job-history/gs/kubernetes-ci-logs/logs/post-kubetest2-push-binaries
https://testgrid.k8s.io/sig-testing-kubetest2#post-kubetest2-push-binaries

Anything else we need to know?:

[k8s-ci-robot]

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[BenTheElder]

#33803 (comment)