devel/py-boolean.py: update to 5.0
Changelog: https://github.com/bastikr/boolean.py/blob/v5.0/CHANGELOG.rst
- switch to USE_PYTHON=pep517
- build docs with provided Makefile instead of through USE_PYTHON=distutils
- tests switched to pytest, hence USE_PYTHON=pytest
Approved by: kai (maintainer)
Differential Revision: https://reviews.freebsd.org/D57192