PyPI tarball lacks test files
In https://files.pythonhosted.org/packages/source/g/gi-docgen/gi-docgen-2023.2.tar.gz, there is no test/config directory.
This causes the test failure:
FAILED test/test_config.py::TestConfig::test_is_unstable - FileNotFoundError: [Errno 2] No such file or directory: 'test/config/gtk4.t...