CI; Adapt variable to new gitlab version (v16)
Need to change at least CI_BUILD_REF_SLUG
by CI_COMMIT_REF_SLUG
Prochaines maintenances programmées: lundi 06/05, lundi 03/06, lundi 01/07
Pour plus d'informations: https://doc-si.inria.fr/display/SU/Gitlab
Need to change at least CI_BUILD_REF_SLUG
by CI_COMMIT_REF_SLUG