Migrate wheel creation control from setup.cfg+py to pyproject.toml
Currently, Python wheel creation is controlled by files setup.cfg and setup.py. The current recommendation is to use one single control file pyproject.toml [https://pip.pypa.io/en/stable/reference/build-system/#build-system-interface].
Control via setup.cfg+py is not declared obsolete [https://packaging.python.org/en/latest/discussions/setup-py-deprecated/#is-setup-py-deprecated]. Insofar there is no need for action. It just could be that migration to pyproject.toml helps solving some other deployment issues.