etcd: Promote etcd v3.6.6 image

[bzsuni]

crane digest gcr.io/etcd-development/etcd:v3.6.6
sha256:60a30b5d81b2217555e2cfb9537f655b7ba97220b99c39ee2e162a7127225890


crane manifest gcr.io/etcd-development/etcd:v3.6.6 | jq
{
  "schemaVersion": 2,
  "mediaType": "application/vnd.oci.image.index.v1+json",
  "manifests": [
    {
      "mediaType": "application/vnd.oci.image.manifest.v1+json",
      "digest": "sha256:5279f56db4f32772bb41e47ca44c553f5c87a08fdf339d74c23a4cdc3c388d6a",
      "size": 2767,
      "platform": {
        "architecture": "amd64",
        "os": "linux"
      }
    },
    {
      "mediaType": "application/vnd.oci.image.manifest.v1+json",
      "digest": "sha256:aa0d8bc8f6a6c3655b8efe0a10c5bf052f5574ebe13f904c5b0c9002ce4b2561",
      "size": 2767,
      "platform": {
        "architecture": "arm64",
        "os": "linux"
      }
    },
    {
      "mediaType": "application/vnd.oci.image.manifest.v1+json",
      "digest": "sha256:e3ecb3bbe44e1315e03b8afb9f00b7c9c9b8d8da4805bbf0d2a07da739a70e7d",
      "size": 2767,
      "platform": {
        "architecture": "ppc64le",
        "os": "linux"
      }
    },
    {
      "mediaType": "application/vnd.oci.image.manifest.v1+json",
      "digest": "sha256:0ac0d83957805ad01166bb48f96a953f1cf3a76282b562bea52ac86d6c0779f6",
      "size": 2767,
      "platform": {
        "architecture": "s390x",
        "os": "linux"
      }
    }
  ]
}

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: bzsuni
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[upodroid]

Suggested change

	"sha256:60a30b5d81b2217555e2cfb9537f655b7ba97220b99c39ee2e162a7127225890": ["v3.6.6", "3.6.6-0"]
	"sha256:60a30b5d81b2217555e2cfb9537f655b7ba97220b99c39ee2e162a7127225890": ["v3.6.6"]

[upodroid]

Dupe of #8769

/close

[k8s-ci-robot]

PR needs rebase.

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[k8s-ci-robot]

@upodroid: Closed this PR.

In response to this:

Dupe of #8769

/close

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