[Fix]The sklearn PyPI package is deprecated, use scikit-learn

[MeowZheng]

as title

[codecov]

Codecov Report

Base: 68.95% // Head: 69.00% // Increases project coverage by +0.05% 🎉

Coverage data is based on head (0f9b64a) compared to base (f2588c0).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #272      +/-   ##
==========================================
+ Coverage   68.95%   69.00%   +0.05%     
==========================================
  Files          93       93              
  Lines        5195     5195              
  Branches      700      700              
==========================================
+ Hits         3582     3585       +3     
+ Misses       1498     1495       -3     
  Partials      115      115              

Flag	Coverage Δ
unittests	69.00% <ø> (+0.05%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
mmflow/datasets/pipelines/transforms.py	78.66% <0.00%> (+0.50%)	⬆️

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