Migrate to kube codegen

[skonto]

Fixes #

Proposed Changes

• Check here and here. Right now code gen is broken.
• Similar to Migrate to kube_codegen.sh eventing#8183, deep-gen also has changed a bit.
• Tested by removing files under ./pkg/client and under dirs where zz_generated.deepcopy.go files are created.

[skonto]

Added by the tool.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.47%. Comparing base (5f5f6d8) to head (6154caf).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #15491      +/-   ##
==========================================
- Coverage   84.49%   84.47%   -0.02%     
==========================================
  Files         219      219              
  Lines       13608    13608              
==========================================
- Hits        11498    11496       -2     
- Misses       1740     1742       +2     
  Partials      370      370              

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[dsimansk]

/approve
/lgtm

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: dsimansk, skonto

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