Fix test_attribution TestFindAllResponsibleByLearningUnitYear
Fix test_attribution TestFindAllResponsibleByLearningUnitYear

uclouvain/osis,uclouvain/OSIS-Louvain,uclouvain/OSIS-Louvain,uclouvain/osis,uclouvain/osis,uclouvain/OSIS-Louvain,uclouvain/osis