remove deprecated numpy type aliases

[jonathan-lemos]

NumPy 1.20 deprecated the type aliases np.bool and np.str. As of NumPy 1.24.3, these aliases have been removed entirely, as seen below:

Python 3.9.15 (main, Nov 10 2022, 15:40:56) 
[GCC 12.2.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import numpy
>>> numpy.bool
<stdin>:1: FutureWarning: In the future `np.bool` will be defined as the corresponding NumPy scalar.
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/archbtw/.pyenv/versions/3.9.15/lib/python3.9/site-packages/numpy/__init__.py", line 305, in __getattr__
    raise AttributeError(__former_attrs__[attr])
AttributeError: module 'numpy' has no attribute 'bool'.
`np.bool` was a deprecated alias for the builtin `bool`. To avoid this error in existing code, use `bool` by itself. Doing this will not modify any behavior and is safe. If you specifically wanted the numpy scalar type, use `np.bool_` here.
The aliases was originally deprecated in NumPy 1.20; for more details and guidance see the original release note at:
    https://numpy.org/devdocs/release/1.20.0-notes.html#deprecations

This change replaces the removed NumPy type aliases with their modern equivalents.

[jameswex]

released pip version 1.1.1 with this change