[Automated] Update net-kourier nightly

[knative-automation]

/assign @knative/serving-writers
/cc @knative/serving-writers

Produced via:

for x in kourier.yaml; do
  curl https://storage.googleapis.com/knative-nightly/net-kourier/latest/$x > ${GITHUB_WORKSPACE}/./third_party/kourier-latest/$x
done

Details:

bumping knative.dev/net-kourier 74f6607...c7434e4:
  > c7434e4 Update community files (# 1298)
  > 2907e68 upgrade to latest dependencies (# 1297)

[knative-prow]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.42%. Comparing base (6544bfe) to head (b4bb924).
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #15577      +/-   ##
==========================================
- Coverage   84.47%   84.42%   -0.06%     
==========================================
  Files         219      219              
  Lines       13608    13608              
==========================================
- Hits        11496    11488       -8     
- Misses       1741     1745       +4     
- Partials      371      375       +4     

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[ReToCode]

/test istio-latest-no-mesh