[release-1.15] Updated the manifests for 1.15

[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 66.31%. Comparing base (98afaa5) to head (2345f44).
Report is 1 commits behind head on release-1.15.

Additional details and impacted files

@@              Coverage Diff              @@
##           release-1.15    #1902   +/-   ##
=============================================
  Coverage         66.31%   66.31%           
=============================================
  Files                53       53           
  Lines              2084     2084           
=============================================
  Hits               1382     1382           
  Misses              587      587           
  Partials            115      115           

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