GHSA-GC2P-G4FG-29VH Kubernetes did not effectively clear service account credentials

In Kubernetes v1.12.0-v1.12.4 and v1.13.0, the rest.AnonymousClientConfig method returns a copy of the provided config, with credentials removed bearer token, username/password, and client certificate/key data. In the affected versions, rest.AnonymousClientConfig did not effectively clear service...