upgrading libraries

back/app/entity/models.py

@@ -23,8 +23,8 @@ class Individual(EntityType):
         props={"items-per-row": "4", "numbered": True},
         title="Surnoms"
     )
-    day_of_birth: date = Field(default=None, title='Date de naissance')
-    place_of_birth: str = Field(default="", title='Lieu de naissance')
+    day_of_birth: Optional[date] = Field(default=None, title='Date de naissance')
+    place_of_birth: Optional[str] = Field(default="", title='Lieu de naissance')
 
     @property
     def label(self) -> str: