[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 e39c83b...446def7:
  > 446def7 upgrade to latest dependencies (# 1312)
  > 089044c Update community files (# 1315)

[knative-prow]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.49%. Comparing base (8556b88) to head (68aaa45).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #15671      +/-   ##
==========================================
- Coverage   83.53%   83.49%   -0.04%     
==========================================
  Files         219      219              
  Lines       17432    17432              
==========================================
- Hits        14561    14555       -6     
- Misses       2499     2503       +4     
- Partials      372      374       +2     

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