[GH actions]: packaging shows some errors

[kif]

This used to work fine with python3.11.
Since python3.12, we have this error:

(py312) kieffer@mac13:~/workspace/pyFAI$ python -m twine check --strict dist/*
Checking dist/pyfai-2024.4.0a0.tar.gz: FAILED
ERROR    `long_description` has syntax errors in markup and would not be rendered on PyPI.                                       
         line 211: Warning: Cannot scale image!                                                                                  
           Could not get size from "https://readthedocs.org/projects/pyFAI/badge":                                               
           Requires Python Imaging Library.                                                                                      
           Reading external files disabled.                                                                                      

[kif]

Apparently, it works on python3.11 but not on python 3.12.
The issue is known for a while on the twine side ...
pypa/twine#908

[kif]

Restricting the version of python used for packaging to 3.11 does not work around properly this issue.
attn @t20100

[kif]

The bug clearly comes from the badges in the Readme.rst file.
Commenting them out is a valid work-around.

[kif]

work-around implemented and reported upstream.