* Drop support for python versions older than 3.7 * Support Python 3.11 * Set minimal attrs version to 22.1.0 * Start running tests against Py3.11 and Pytest `7.3.x` and `7.4.x` * Update copyright headers * ``Subprocess.run()`` now accepts ``shell`` keyword argument like ``subprocess.Popen``. - enable testsuite OBS-URL: https://build.opensuse.org/package/show/devel:languages:python:pytest/python-pytest-shell-utilities?expand=0&rev=4