[release-1.15] Upgrade eventing to latest 1.15

[pierDipi]

As per title

[knative-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: pierDipi

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 52.17%. Comparing base (7092bb9) to head (4d778c3).

Additional details and impacted files

@@                Coverage Diff                 @@
##             release-1.15    #4150      +/-   ##
==================================================
+ Coverage           48.11%   52.17%   +4.05%     
- Complexity              0      861     +861     
==================================================
  Files                 246      345      +99     
  Lines               14673    21739    +7066     
  Branches                0      295     +295     
==================================================
+ Hits                 7060    11342    +4282     
- Misses               6888     9508    +2620     
- Partials              725      889     +164     

Flag	Coverage Δ
java-unittests	72.24% <ø> (?)

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[creydr]

/lgtm

[pierDipi]

/retest

[pierDipi]

/retest

[pierDipi]

/retest

[pierDipi]

/retest

[knative-prow]

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

Test name	Commit	Details	Required	Rerun command
integration-tests_eventing-kafka-broker_release-1.15	4d778c3	link	true	/test integration-tests
reconciler-tests_eventing-kafka-broker_release-1.15	4d778c3	link	true	/test reconciler-tests

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