Fix CVE-2025-68121 and CVE-2026-24051

[yangjunmyfm192085]

What this PR does / why we need it:

Which issue(s) this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close the issue(s) when PR gets merged):
Fixes #1823 #1774

[k8s-ci-robot]

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[k8s-ci-robot]

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[yangjunmyfm192085]

/test pull-metrics-server-verify

[yangjunmyfm192085]

/assign @dgrisonnet please take a look, thanks.

[yangjunmyfm192085]

/assign @dgrisonnet

[dgrisonnet]

Kubernetes 1.33 is built with golang 1.25.11. Since most of the codebase we rely on come from there, I don't think it is safe to bump to 1.26.
That said I am working on a 0.9 release of metrics-server that would include the most recent golang version and the CVE fix