fix: chmod configuration
When the configuration is installed with guix, it will have 444 perms.
Prochaines maintenances programmées: lundi 06/05, lundi 03/06, lundi 01/07
Pour plus d'informations: https://doc-si.inria.fr/display/SU/Gitlab
When the configuration is installed with guix, it will have 444 perms.