Do not use pkg_resources

[mtelka]

The pkg_resources is deprecated. Please do not use it.

This is relevant part of the stack:

  File "/usr/lib/python3.9/vendor-packages/_pytest/assertion/rewrite.py", line 178, in exec_module
    exec(co, module.__dict__)
  File "/usr/lib/python3.9/vendor-packages/pytest_reporter/__init__.py", line 1, in <module>
    from pkg_resources import get_distribution, DistributionNotFound
  File "/usr/lib/python3.9/vendor-packages/pkg_resources/__init__.py", line 118, in <module>
    warnings.warn(
DeprecationWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html