Update SKLL to v3.2.0

[desilinguist]

• Update SKLL dependency to v3.2.0
• Replace deprecated scikit-learn method in modeler.py.
• Update all SKLL models for tests.

[codecov]

Codecov Report

Base: 93.20% // Head: 93.20% // No change to project coverage 👍

Coverage data is based on head (b1e2dd3) compared to base (5f9ca80).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #591   +/-   ##
=======================================
  Coverage   93.20%   93.20%           
=======================================
  Files          31       31           
  Lines        4549     4549           
=======================================
  Hits         4240     4240           
  Misses        309      309           

Impacted Files	Coverage Δ
rsmtool/modeler.py	97.59% <100.00%> (ø)

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