Add sites as dependency to migration 0003

aleksis/apps/csv_import/migrations/0003_fix_uniqueness_per_site.py

@@ -7,6 +7,7 @@ import django.db.models.deletion
 class Migration(migrations.Migration):
 
     dependencies = [
+        ('sites', '0002_alter_domain_unique'),
         ('core', '0019_fix_uniqueness_per_site'),
         ('csv_import', '0002_importjob'),
     ]