update import for factory_boy 3.x

backend/metagenedb/apps/catalog/factory/function.py

-from factory import DjangoModelFactory, Faker, fuzzy
+from factory import Faker, fuzzy
+from factory.django import DjangoModelFactory
 
 from metagenedb.apps.catalog import models
 

backend/metagenedb/apps/catalog/factory/gene.py

 from factory import (
-    DjangoModelFactory, Faker, RelatedFactory, SubFactory, fuzzy
+    Faker, RelatedFactory, SubFactory, fuzzy
 )
+from factory.django import DjangoModelFactory
 
 from metagenedb.apps.catalog import models
 

backend/metagenedb/apps/catalog/factory/taxonomy.py

 from collections import OrderedDict
 
-from factory import DjangoModelFactory, fuzzy
+from factory import fuzzy
+from factory.django import DjangoModelFactory
 from faker import Factory
 
 from metagenedb.apps.catalog import models