fix dates

models/Generation.py

@@ -2,7 +2,7 @@ from datetime import datetime, UTC
 from enum import Enum
 from typing import List, Optional
 
-from pydantic import BaseModel
+from pydantic import BaseModel, Field
 
 from models.Asset import Asset
 from models.enums import AspectRatios, Quality
@@ -23,5 +23,5 @@ class Generation(BaseModel):
     tech_prompt: Optional[str] = None
     assets_list: List[str]
     result: Optional[str] = None
-    created_at: datetime = datetime.now(UTC)
-    updated_at: datetime = datetime.now(UTC)
+    created_at: datetime = Field(default_factory=lambda: datetime.now(UTC))
+    updated_at: datetime = Field(default_factory=lambda: datetime.now(UTC))