upgrade checkout action to v4 in all workflows

[shaypal5]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (15012cf) 97.85% compared to head (bbc7484) 97.85%.
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #187   +/-   ##
=======================================
  Coverage   97.85%   97.85%           
=======================================
  Files           6        6           
  Lines         512      512           
  Branches       96       96           
=======================================
  Hits          501      501           
  Misses         10       10           
  Partials        1        1           

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