feat: datetimes with timezones

schemas/deal.py

@@ -1,3 +1,4 @@
+from datetime import datetime
 from typing import Optional
 
 from schemas.base import BaseSchema, BaseResponse
@@ -11,6 +12,7 @@ class DealSchema(BaseSchema):
     name: str
     lexorank: str
     status_id: int
+    created_at: datetime
 
 
 class CreateDealSchema(BaseSchema):