fix(test): enable codecov status in a PR)

[Katka92]

Enable codecov status report in a GH PR jobs section.
https://issues.redhat.com/browse/KFLUXUI-214

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.70%. Comparing base (2d6db11) to head (75c758c).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff            @@
##             main      #27    +/-   ##
========================================
  Coverage   79.70%   79.70%            
========================================
  Files         564      564            
  Lines       21054    21054            
  Branches     5229     4972   -257     
========================================
  Hits        16781    16781            
- Misses       4248     4249     +1     
+ Partials       25       24     -1     

Flag	Coverage Δ
unittests	79.70% <ø> (ø)

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