[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 4df21ed...b2f6119:
  > b2f6119 Update community files (# 1457)
  > 88e5e91 upgrade to latest dependencies (# 1458)

[knative-prow]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.28%. Comparing base (42d556e) to head (bd8dea3).

Additional details and impacted files

@@            Coverage Diff             @@
##             main   #16609      +/-   ##
==========================================
+ Coverage   80.22%   80.28%   +0.05%     
==========================================
  Files         217      217              
  Lines       13568    13568              
==========================================
+ Hits        10885    10893       +8     
+ Misses       2316     2311       -5     
+ Partials      367      364       -3     

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[knative-prow]

@knative-automation: The following test failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
kourier-stable_serving_main	bd8dea3	link	true	/test kourier-stable

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