Deprecated code in pupildata.py

[joebathelt]

First of all, thank you for creating such a feature-rich and accessible package for pupillometry. I'm new to this method and reading the documentation has been immensely helpful.

I experienced some issues when going through the example code in the documentation. This seems to be related to a version conflict between some of the required packages and the code in pypillometry.

In pupildata.py, np.infty needs to be replaced with np.inf to make it compatible with NumPy > 2.0.0

There is a similar NumPy issue when applying the .downsample method. I get an error "np.NaN was removed in the NumPy 2.0 release. Use np.nan instead.", but could not figure out how to resolve this.