bump K8s min version to 1.33

[dprotaso]

As per: https://github.com/knative/community/blob/main/mechanics/RELEASE-SCHEDULE.md

[dprotaso]

/assign @linkvt @gauron99

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.69%. Comparing base (af2d223) to head (d9dde54).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3312      +/-   ##
==========================================
+ Coverage   74.64%   74.69%   +0.04%     
==========================================
  Files         188      188              
  Lines        8207     8207              
==========================================
+ Hits         6126     6130       +4     
+ Misses       1841     1839       -2     
+ Partials      240      238       -2     

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[gauron99]

/lgtm
/approve

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dprotaso, gauron99

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