Replace deprecated np.fix with np.trunc in yulewalk

[kevinavrilla-habs]

Description

With NumPy 2.5, numpy.fix is deprecated:

Deprecated since version 2.5: numpy.fix is deprecated. Use numpy.trunc instead, which is faster and follows the Array API standard.

EEGPrep 0.3.0 currently uses np.fix in:

eegprep/plugins/clean_rawdata/private/yulewalk.py:85

stop = int(np.fix(ff[index + 1] * npt))

This emits:

The function "fix" is deprecated
  numpy.fix is deprecated. Use numpy.trunc instead.

Proposed change

Replace it with:

stop = int(np.trunc(ff[index + 1] * npt))

np.fix and np.trunc both round towards zero, so this should preserve the current numerical behaviour while removing the warning and maintaining compatibility with future NumPy versions.

Environment

EEGPrep: 0.3.0
NumPy: 2.5.2
Python: 3.12
OS: Windows