Log Message:
py-virtualenv: updated to 20.16.7

Bugfixes - 20.16.7
- Use parent directory of python executable for pyvenv.cfg "home" \ 
value per PEP 405
- In POSIX virtual environments, try alternate binary names if \ 
``sys._base_executable`` does not exist
- Upgrade embedded wheel to ``0.38.4`` and  pip to ``22.3.1`` from ``22.3`` and \ 
setuptools to ``65.5.1`` from
  ``65.5.0``