[WIP]: Fix KinD tests

[Cali0707]

Fixes #7701

Proposed Changes

• Reduce parallelism of KinD tests
• Increase the timeout on the KinD tests since the parallelism dropped

[knative-prow]

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This pull-request has been approved by: Cali0707

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.15%. Comparing base (bbb9051) to head (dab99cf).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #7784   +/-   ##
=======================================
  Coverage   69.15%   69.15%           
=======================================
  Files         339      339           
  Lines       19431    19431           
=======================================
  Hits        13437    13437           
  Misses       5332     5332           
  Partials      662      662           

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[knative-prow]

@Cali0707: 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	dab99cf	link	true	/test reconciler-tests

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