Merge pull request #29890 from ruquanzhao/AddArm64Bucket

add gs://arm64-k8s-test to additional_allowed_buckets

Author: k8s-ci-robot

config/prow/config.yaml

@@ -183,6 +183,7 @@ deck:
     - containerd-integration
     - ppc64le-kubernetes
     - k8s-conform-s390x-k8s
+    - arm64-k8s-test
 
 prowjob_namespace: default
 pod_namespace: test-pods