ci: Fix coverage measurement on Windows

[edgarrmondragon]

Closes #6330

[netlify]

✅ Deploy Preview for meltano canceled.

Name	Link
🔨 Latest commit	7f5bda3
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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (1317199) 90.95% compared to head (7f5bda3) 91.50%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8368      +/-   ##
==========================================
+ Coverage   90.95%   91.50%   +0.55%     
==========================================
  Files         244      244              
  Lines       19125    19125              
  Branches     2140     2140              
==========================================
+ Hits        17395    17501     +106     
+ Misses       1412     1343      -69     
+ Partials      318      281      -37     

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