feat: upgrade codecov workflow version

[kaanersoy]

[upgrade codecov workflow version
](feat: upgrade codecov workflow version)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.58%. Comparing base (7f7fdd2) to head (e83e83c).
Report is 5 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #122   +/-   ##
=======================================
  Coverage   89.58%   89.58%           
=======================================
  Files          11       11           
  Lines         432      432           
  Branches      121      121           
=======================================
  Hits          387      387           
+ Misses         45       44    -1     
- Partials        0        1    +1     

Flag	Coverage Δ
unittests	89.58% <ø> (ø)

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