Bug 51692

`setup.py test` is deprecated since setuptools 41.5.0:                           
https://setuptools.pypa.io/en/latest/history.html#v41-5-0                        
                                                                                 
setuptools 72.0.0 removed support for deprecated `setup.py test` command:        
                                                                                 
https://setuptools.pypa.io/en/stable/history.html#v72-0-0                        
> The test command has been removed. Users relying on ‘setup.py test’ will need  
> to migrate to another test runner or pin setuptools before this version.       
                                                                                 
See for details:                                                                 
https://bugzilla.altlinux.org/50996


Moreover, according to beehive logs:
https://git.altlinux.org/beehive/logs/Sisyphus/x86_64/archive/2024/1011/success/python3-module-feedgenerator-2.1.0-alt1

> Ran 0 tests in 0.000s
> NO TESTS RAN
> + exit 0

Upstream uses `pytest` for tests:
https://github.com/getpelican/feedgenerator/blob/c1e47f427d95ec71d5cfe651b268b063e5788741/.github/workflows/main.yml#L31-L32