fix!: removed .commit() from repository level

repositories/pricing.py

@@ -1,12 +1,12 @@
 from sqlalchemy import select
-from sqlalchemy.ext.asyncio import AsyncSession
 
 from db.models.pricing import PricingConfig
+from db.session import UnitOfWork
 
 
 class PricingRepository:
-    def __init__(self, session: AsyncSession) -> None:
-        self.session = session
+    def __init__(self, uow: UnitOfWork) -> None:
+        self.session = uow.session
 
     async def get(self) -> PricingConfig | None:
         stmt = select(PricingConfig).where(PricingConfig.id == 1)