Support numpy >= 1.23

[robmoore]

numpy.asscalar has been removed from Numpy in release 1.23.

The function is called in:

• facets_overview/python/base_generic_feature_statistics_generator.py
• facets_overview/facets_overview/base_generic_feature_statistics_generator.py

The guidance in the docs is to use numpy.ndarray.item() instead.