Add CVSS v4.0 support, fix CVSS v2.0 invalid calculator link

[pandatix]

What type of PR is this?

/kind feature /kind cleanup

What this PR does / why we need it:

FIRST.ORG SIG CVSS (which I'm part of) released CVSS v4.0 months ago, and we see adoption going on in the whole ecosystem. Nevertheless, Kubernetes is not ready yet to handle those new vectors... but not for long ! :tada:

Through this PR, I bring the possibility to handle CVSS v4.0 vector strings. Moreover, I fix the calculator link computation as the FIRST.ORG does not have a calculator for CVSS v2.0, which technically produced 404 URLs despite it is no longer used by the community.

Which issue(s) this PR fixes:

Did not open an issue for the CVSS v2.0 calculator link, though it was irrelevant as will affect people relying on CVSS v2.0 vector strings which will most likely be nobody.

Special notes for your reviewer:

Does this PR introduce a user-facing change?

NONE

[k8s-ci-robot]

Hi @pandatix. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: pandatix Once this PR has been reviewed and has the lgtm label, please assign cici37 for approval. For more information see the Kubernetes Code Review Process.

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[k8s-ci-robot]

PR needs rebase.

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[pandatix]

The NVD has now official support of CVSS v4.0 (https://nvd.nist.gov/general/news/cvss-v4-0-official-support), may be a good time to re-evaluate this PR.

[k8s-triage-robot]

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/lifecycle stale