cloudbuild: migrate gcb-docker-gcloud to registry.k8s.io registry

Migrate to the registry.k8s.io/releng/gcb-docker-gcloud  as part
of the general move mentioned here github.com/kubernetes/release/pull/4481

Signed-off-by: Feruzjon Muyassarov <feruzjon.muyassarov@est.tech>

Author: fmuyassarov

cloudbuild.yaml

@@ -3,7 +3,7 @@ options:
   substitution_option: ALLOW_LOOSE
   machineType: E2_HIGHCPU_32
 steps:
-- name: gcr.io/k8s-staging-test-infra/gcb-docker-gcloud
+- name: registry.k8s.io/releng/gcb-docker-gcloud
   entrypoint: make
   env:
   - REGISTRY=gcr.io/k8s-staging-networking