Drop support for Kubernetes 1.28.x

[yankay]

What type of PR is this?

/kind flake

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

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Does this PR introduce a user-facing change?:

Drop support for Kubernetes 1.28.x minimum version now is 1.29.x
Drop support for CRI-O 1.28.x minimum version now is 1.29.x

[k8s-ci-robot]

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[yankay]

/ok-to-test

[VannTen]

/lgtm /kind cleanup

[tico88612]

Related #11589 /kind cleanup /retitle Drop support for Kubernetes 1.28.x /release-note-edit

Drop support for Kubernetes 1.28.x minimum version now is 1.29
Drop support for CRI-O 1.28.x minimum version now is 1.29