[release-1.10] Increase kourier controller CPU limit

[knative-prow-robot]

This is an automated cherry-pick of #1149

The CPU limit of kourier controller was increased to avoid CPU limitation issues in larger installations

[knative-prow]

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[codecov]

Codecov Report

Merging #1154 (e4311fb) into release-1.10 (f0c1daa) will not change coverage.
Report is 1 commits behind head on release-1.10.
The diff coverage is n/a.

@@              Coverage Diff              @@
##           release-1.10    #1154   +/-   ##
=============================================
  Coverage         80.78%   80.78%           
=============================================
  Files                18       18           
  Lines              1343     1343           
=============================================
  Hits               1085     1085           
  Misses              205      205           
  Partials             53       53