promote etcd 3.5.15-0

[pacoxu]

https://prow.k8s.io/view/gs/kubernetes-jenkins/logs/post-kubernetes-push-image-etcd/1816565679373946880

• docker manifest annotate --os windows --arch amd64 --os-version 10.0.20348.2582 gcr.io/k8s-staging-etcd/etcd:3.5.15-0 gcr.io/k8s-staging-etcd/etcd:3.5.15-0-windows-amd64-ltsc2022
  docker manifest push --purge gcr.io/k8s-staging-etcd/etcd:3.5.15-0
  sha256:a6dc63e6e8cfa0307d7851762fa6b629afb18f28d8aa3fab5a6e91b4af60026a

promote after kubernetes/kubernetes#126356

[pacoxu]

/assign @dims @ jsturtevant @BenTheElder
/cc @kubernetes/release-team

[k8s-ci-robot]

@pacoxu: GitHub didn't allow me to request PR reviews from the following users: kubernetes/release-team.

Note that only kubernetes members and repo collaborators can review this PR, and authors cannot review their own PRs.

In response to this:

/assign @dims @ jsturtevant @BenTheElder
/cc @kubernetes/release-team

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[pacoxu]

/assign @dims @jsturtevant @BenTheElder

[dims]

/approve
/lgtm

[BenTheElder]

/lgtm
/approve
confirmed this digest and tag matches the build logs

[pacoxu]

cc @kubernetes/release-engineering

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: BenTheElder, dims, pacoxu, saschagrunert

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

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