[Fix] revise pip upgrade for win-ci

[LeoXing1996]

pip install --upgrade pip is failing on windows GitHub actions runners with v22.0.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 74.78%. Comparing base (6bce6ed) to head (28f60cb).
⚠️ Report is 60 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #311      +/-   ##
==========================================
- Coverage   74.81%   74.78%   -0.04%     
==========================================
  Files         145      145              
  Lines       10912    10912              
  Branches     2145     2145              
==========================================
- Hits         8164     8160       -4     
- Misses       2212     2214       +2     
- Partials      536      538       +2     

Flag	Coverage Δ
unittests	74.78% <ø> (-0.02%)	⬇️

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