chore(prlint): fail prlinter on codecov failures, with exemption label

[iliapolo]

Re-roll of #32867

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.38%. Comparing base (5f060f4) to head (98c3ec1).

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #32868   +/-   ##
=======================================
  Coverage   81.38%   81.38%           
=======================================
  Files         222      222           
  Lines       13695    13695           
  Branches     2412     2412           
=======================================
  Hits        11145    11145           
  Misses       2271     2271           
  Partials      279      279           

Flag	Coverage Δ
suite.unit	81.38% <ø> (ø)

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Components	Coverage Δ
packages/aws-cdk	80.69% <ø> (ø)
packages/aws-cdk-lib/core	82.09% <ø> (ø)

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 493539a
• Result: SUCCEEDED
• Build Logs (available for 30 days)

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