add junit codecov update for flaky test analysis

[fmigneault]

https://docs.codecov.com/docs/test-analytics

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.28%. Comparing base (a9bda01) to head (cb8464d).
Report is 2 commits behind head on master.

❌ We are unable to process any of the uploaded JUnit XML files. Please ensure your files are in the right format.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #757   +/-   ##
=======================================
  Coverage   87.28%   87.28%           
=======================================
  Files          80       80           
  Lines       20625    20625           
  Branches     2809     2809           
=======================================
  Hits        18003    18003           
  Misses       1876     1876           
  Partials      746      746           

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