Conformance test failing for v1.21.4

Our conformance tests are failing for v1.21.4 with a specific error. Does anyone about this error?

[Fail] [sig-auth] ServiceAccounts [It] ServiceAccountIssuerDiscovery should support OIDC discovery of service account issuer [Conformance]
/workspace/src/k8s.io/kubernetes/_output/dockerized/go/src/k8s.io/kubernetes/test/e2e/auth/service_accounts.go:789

Cluster information:

Kubernetes version: 1.21.4
Cloud being used: (put bare-metal if not on a public cloud) bare metal
Installation method: Nirmata UI (vendor specific)
Host OS: Ubuntu 16.04.6 LTS
CNI and version: Calico 3.11.1
CRI and version:

I’d reach out to sig auth directly, either on their mailing list or in their slack channel. Most SIGs don’t look to the forums for this sort of thing.