Removed the scipy v1.16 dependency

[siddharthst]

Since the issue which required the old scipy package with statsmodels(statsmodels/statsmodels#9584) is fixed now, there is no need to include the old version as a dependency.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.12%. Comparing base (5b12274) to head (62f70df).
⚠️ Report is 37 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #266      +/-   ##
==========================================
- Coverage   94.25%   94.12%   -0.14%     
==========================================
  Files          78       78              
  Lines        4038     4065      +27     
==========================================
+ Hits         3806     3826      +20     
- Misses        232      239       +7     

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[PauBadiaM]

Hi @siddharthst,

Thanks for the PR, merging now and will try to have a release by today!