Image promotion for etcd 3.5.11-0

[mzaian]

Based on: kubernetes/kubernetes#122233

➜  ~ docker inspect gcr.io/k8s-staging-etcd/etcd:3.5.11-0
[
    {
        "Id": "sha256:57172d31b4d3be7b1d72831b7cb2ae7122575052e46f0bcec48108305cbf6472",
        "RepoTags": [
            "gcr.io/k8s-staging-etcd/etcd:3.5.11-0"
        ],
        "RepoDigests": [
            "gcr.io/k8s-staging-etcd/etcd@sha256:29901446ff08461789b7cd8565fc5b538134e58f81ca1f50fd65d0371cf6571e"
        ],

Required for: kubernetes/kubernetes#122393

[mzaian]

/assign @dims @saschagrunert

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mzaian, saschagrunert

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• registry.k8s.io/images/k8s-staging-etcd/OWNERS [saschagrunert]

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