Fix permission checks

aleksis/apps/kolego/schema/absence.py

@@ -72,7 +72,7 @@ class AbsenceBatchCreateMutation(BaseBatchCreateMutation):
 class AbsenceBatchDeleteMutation(BaseBatchDeleteMutation):
     class Meta:
         model = Absence
-        permission_required = "kolego.delete_absence_rule"
+        permissions = ("kolego.delete_absence_rule",)
 
 
 class AbsenceBatchPatchMutation(BaseBatchPatchMutation):
@@ -109,7 +109,7 @@ class AbsenceReasonBatchCreateMutation(BaseBatchCreateMutation):
 class AbsenceReasonBatchDeleteMutation(BaseBatchDeleteMutation):
     class Meta:
         model = AbsenceReason
-        permission_required = "kolego.delete_absencereason_rule"
+        permissions = ("kolego.delete_absencereason_rule",)
 
 
 class AbsenceReasonBatchPatchMutation(BaseBatchPatchMutation):