chore: Trigger required workflows on merge_group event

[abdhalees]

Description of changes:

to enable merge queue feature in the repo, trigger workflows that are checked in PR when merge queue is requested.

https://docs.github.com/en/repositories/configuring-branches-and-merges-in-your-repository/configuring-pull-request-merges/managing-a-merge-queue#triggering-merge-group-checks-with-github-actions

tested in global-styles repo: cloudscape-design/global-styles#48

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.35%. Comparing base (72b4157) to head (c59723f).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #44   +/-   ##
=======================================
  Coverage   95.35%   95.35%           
=======================================
  Files          15       15           
  Lines         431      431           
  Branches      124      124           
=======================================
  Hits          411      411           
  Misses         20       20           

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