Azure e2e sometimes fails to authenticate

[mboersma]

Environment

CI for Azure SIG jobs.

What steps did you take and what happened?

Rarely, all jobs in pull-azure-sigs fail due to some az login issue. Example:
https://prow.k8s.io/view/gs/kubernetes-ci-logs/pr-logs/pull/kubernetes-sigs_image-builder/1653/pull-azure-sigs/1866596918042300416

Retrying the job usually succeeds.

What did you expect to happen?

Authentication should succeed.

Relevant log output

Log Output

�[1;31mBuild 'azure-arm.sig-ubuntu-2404' errored after 88 milliseconds 840 microseconds: error fetching tenantID and subscriptionID from Azure CLI (are you logged on using `az login`?): Unable to find default subscription�[0m

==> Wait completed after 88 milliseconds 912 microseconds

==> Some builds didn't complete successfully and had errors:
--> azure-arm.sig-ubuntu-2404: error fetching tenantID and subscriptionID from Azure CLI (are you logged on using `az login`?): Unable to find default subscription

==> Builds finished but no artifacts were created.
make: *** [Makefile:503: build-azure-sig-ubuntu-2404] Error 1

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/kind bug