unknown pytest option --doctest-docutils-modules

Hi! I'm currently updating to 0.23.0post0 on Arch Linux and ran into the issue, that the setup.cfg declares an option to pytest that is not understood.

This is probably due to some pytest plugin or similar not being around or some version mismatch on your target test infrastructure.

ERROR: usage: pytest [options] [file_or_dir] [file_or_dir] [...]
pytest: error: unrecognized arguments: --doctest-docutils-modules
  inifile: /build/python-libtmux/src/libtmux-0.23.0post0/setup.cfg
  rootdir: /build/python-libtmux/src/libtmux-0.23.0post0

This is (roughly) how the package is being built: https://gitlab.archlinux.org/archlinux/packaging/packages/python-libtmux/-/blob/main/PKGBUILD
Here are the full build/test logs:
python-libtmux-0.23.0post0-1-x86_64-check.log
python-libtmux-0.23.0post0-1-x86_64-build.log

After using sed to replace --doctest-docutils-modules with --doctest-modules the tests work.

Start with the pytest options in setup.cfg and compare the failing option with the documented pytest options. Run the test command using the repository configuration, then confirm pytest accepts the configured option and the test suite proceeds without the reported unrecognized-argument error.