fix sklearn build error due to old dependency version installed with newer scipy

[imatiach-msft]

Recently started seeing gated build failures with the error:

2023-07-10T03:26:24.2325334Z         if one_alpha:
2023-07-10T03:26:24.2325569Z             A.flat[:: n_features + 1] += alpha[0]
2023-07-10T03:26:24.2325960Z >           return linalg.solve(A, Xy, sym_pos=True, overwrite_a=True).T
2023-07-10T03:26:24.2326366Z E           TypeError: solve() got an unexpected keyword argument 'sym_pos'

link to build:
https://pipelines.actions.githubusercontent.com/serviceHosts/c1806717-186f-43d1-b5bb-864035754060/_apis/pipelines/1/runs/1609/signedlogcontent/2?urlExpires=2023-07-10T15%3A33%3A11.6111338Z&urlSigningMethod=HMACV1&urlSignature=5aCYsNh0b1aoNRoesrWhta7mxH8IrH5Crdw%2BgiVPGtI%3D

This issue seems to be due to newer scikit learn initially being installed with latest scipy and then due to the restrictions in responsibleai pypu package an older version of scikit-learn being subsequently installed.
This PR temporarily fixes the issue by re-installing latest version of scikit-learn until the bound is removed.

[codecov-commenter]

Codecov Report

Patch and project coverage have no change.

Comparison is base (cb3ce2e) 87.70% compared to head (7a2c4f9) 87.70%.

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Additional details and impacted files

@@           Coverage Diff           @@
##             main     #568   +/-   ##
=======================================
  Coverage   87.70%   87.70%           
=======================================
  Files          62       62           
  Lines        4075     4075           
=======================================
  Hits         3574     3574           
  Misses        501      501           

Flag	Coverage Δ
unittests	87.70% <ø> (ø)

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