Remove np.bool which is not supported in latest np versions

[Louis-Dupont]

Issue

Exception when using SG with numpy==1.25.2

    (torch.bool, np.bool),
../../../../miniconda3/envs/louis-dev/lib/python3.8/site-packages/numpy/__init__.py:305: in __getattr__
    raise AttributeError(__former_attrs__[attr])
E   AttributeError: module 'numpy' has no attribute 'bool'.
E   `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.
E   The aliases was originally deprecated in NumPy 1.20; for more details and guidance see the original release note at:
E       https://numpy.org/devdocs/release/1.20.0-notes.html#deprecations

Proposed solution

(torch.bool, np.bool), -> (torch.bool, bool),

[shaydeci]

Issue

Exception when using SG with numpy==1.25.2

    (torch.bool, np.bool),
../../../../miniconda3/envs/louis-dev/lib/python3.8/site-packages/numpy/__init__.py:305: in __getattr__
    raise AttributeError(__former_attrs__[attr])
E   AttributeError: module 'numpy' has no attribute 'bool'.
E   `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.
E   The aliases was originally deprecated in NumPy 1.20; for more details and guidance see the original release note at:
E       https://numpy.org/devdocs/release/1.20.0-notes.html#deprecations

Proposed solution

(torch.bool, np.bool), -> (torch.bool, bool),

Our requirement is numpy<=1.23.
Did you check compatibility ?

[Louis-Dupont]

I tried with numpy==1.25 and numpy==1.17, both work.
np.ndarray.astype(bool) works in both versions, but they removed np.ndarray.astype(np.bool) and I don't see a reason to keep using it

[BloodAxe]

LGTM