release v0.51.0 details

[strongjz]

What this PR does / why we need it:

This release upgrades Alpine to 3.14.4 and nginx to 1.19.10

Patches OpenSSL CVE-2022-0778

Patches Libxml2 CVE-2022-23308

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation only

Which issue/s this PR fixes

Patches OpenSSL CVE-2022-0778

Patches Libxml2 CVE-2022-23308

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I've read the CONTRIBUTION guide
• I have added tests to cover my changes.
• All new and existing tests passed.

[strongjz]

/ok-to-test
/priority important-critical
/triage accepted
/kind bug

[k8s-ci-robot]

@strongjz: The label(s) priority/important-critical cannot be applied, because the repository doesn't have them.

In response to this:

/ok-to-test
/priority important-critical
/triage accepted
/kind bug

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[tao12345666333]

/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: strongjz, tao12345666333

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