refactor: using optional keyword

repositories/status.py

@@ -1,3 +1,5 @@
+from typing import Optional
+
 from sqlalchemy import select
 
 from models import Status
@@ -7,14 +9,13 @@ from schemas.status import UpdateStatusSchema
 
 class StatusRepository(BaseRepository):
     async def get_all(self, board_id: int) -> list[Status]:
-        stmt = (
-            select(Status)
-            .where(Status.is_deleted.is_(False), Status.board_id == board_id)
+        stmt = select(Status).where(
+            Status.is_deleted.is_(False), Status.board_id == board_id
         )
         result = await self.session.execute(stmt)
         return list(result.scalars().all())
 
-    async def get_by_id(self, status_id: int) -> Status | None:
+    async def get_by_id(self, status_id: int) -> Optional[Status]:
         stmt = select(Status).where(
             Status.id == status_id, Status.is_deleted.is_(False)
         )