Gitlab was upgraded to latest version (v18.3.1), please report issues to https://forum.duniter.org/t/interventions-et-indisponibilite-des-forums-et-de-gitlab/7131/298
Black is set to version "^19.10b0" on the pyproject.toml; however, it seems that pre-commit
fetches the latest version, which is 20.8b1.
As a consequence, black formatting is different while coding and on the pre-commit.
I suggest updating black.