[release-1.21] Updated the manifests for 1.21

[houshengbo]

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[knative-prow]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 63.45%. Comparing base (7dfa2f2) to head (5b8675a).
⚠️ Report is 1 commits behind head on release-1.21.

Additional details and impacted files

@@              Coverage Diff              @@
##           release-1.21    #2324   +/-   ##
=============================================
  Coverage         63.45%   63.45%           
=============================================
  Files                49       49           
  Lines              1899     1899           
=============================================
  Hits               1205     1205           
  Misses              600      600           
  Partials             94       94           

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