use kueue 0.12.0 in CI

Author: dgrove-oss

hack/kueue-config/kustomization.yaml

@@ -2,12 +2,12 @@ apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 
 resources:
-- "https://github.com/kubernetes-sigs/kueue/config/default?ref=v0.12.0-rc.3"
+- "https://github.com/kubernetes-sigs/kueue/config/default?ref=v0.12.0"
 
 images:
 - name: us-central1-docker.pkg.dev/k8s-staging-images/kueue/kueue
-  # newName: registry.k8s.io/kueue/kueue
-  newTag: v0.12.0-rc.3
+  newName: registry.k8s.io/kueue/kueue
+  newTag: v0.12.0
 
 patches:
 - target: