Run hack/update-codegen.sh on Dependabot PRs

[creydr]

Currently we don't run hack/update-codegen.sh on Dependabot PRs like #8801. This leads to failing "verify codegen" jobs.

This PR addresses it and runs hack/update-codegen.sh on dependabot PRs

[knative-prow[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: creydr

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[codecov[bot]]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 51.15%. Comparing base (6ae393a) to head (1f34bb9). :warning: Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8805   +/-   ##
=======================================
  Coverage   51.14%   51.15%           
=======================================
  Files         409      409           
  Lines       21360    21360           
=======================================
+ Hits        10924    10926    +2     
+ Misses       9584     9583    -1     
+ Partials      852      851    -1     

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[creydr]

/test reconciler-tests /cc @Cali0707 @twoGiants @matzew

[knative-prow[bot]]

@creydr: 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
reconciler-tests_eventing_main	1f34bb955e71000dfad04fceab4750ff13023052	link	true	/test reconciler-tests

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