DeprecationWarning from SciPy in `test_persist.py`

[sarahec]

Discovered in nixpkgs:
FAILED skops/io/tests/test_persist.py::test_dump_and_load_with_file_wrapper - DeprecationWarning: scipy.optimize: The dispandiprint options of the L-BFGS-B solver are deprecated and will be removed in SciPy 1.18.0.

[adrinjalali]

Thanks for reporting this, will work on a fix.

[adrinjalali]

Note that the issue stems from scikit-learn, and scikit-learn=1.7.1 has fixed the issue.