Updated upload-artifact action from v3 -> v4

[dalager]

Got deprecation warning:

The following artifacts were uploaded using a version of actions/upload-artifact that is scheduled for deprecation: "junit-test-report". Please update your workflow to use v4 of the artifact actions. Learn more: https://github.blog/changelog/2024-04-16-deprecation-notice-v3-of-the-artifact-actions/

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.85%. Comparing base (761d224) to head (dbe8f70).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #22   +/-   ##
=======================================
  Coverage   84.85%   84.85%           
=======================================
  Files           7        7           
  Lines         284      284           
=======================================
  Hits          241      241           
  Misses         43       43           

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