[CODEMOD][caffe2] replace numpy.bool with bool (#111432)
Test Plan:
numpy.bool is long deprecated and removed starting numpy-1.20.0 [1]. This replaces all references with equivalent `bool` type using the following oneliner:
```
rg -l 'np\.bool' caffe2 | grep '\.py$' | xargs perl -pi -e 's,\bnp\.bool\b,bool,'
```
1. https://numpy.org/devdocs/release/1.20.0-notes.html#deprecations
Differential Revision: D50372711
Pull Request resolved: https://github.com/pytorch/pytorch/pull/111432
Approved by: https://github.com/Skylion007
