Update depreciation_date field type in models and schemas

- Changed the type of the depreciation_date field from Optional[int] to Optional[datetime] in the LineItem model and LineItemBase schema for improved accuracy in date representation.
- Updated the frontend interface to reflect the change, altering depreciation_date from number to string to accommodate the new datetime format.

backend/api/v1/modules/a76/items/models.py

@@ -176,7 +176,7 @@ class LineItem(Base, TenantScopedMixin, TimestampMixin):
     )  # NUMEROGUIA/NUMERODEGUIA
 
     # Dates
-    depreciation_date: Mapped[Optional[int]] = mapped_column(
+    depreciation_date: Mapped[Optional[datetime]] = mapped_column(
         Integer
     )  # FECHADEPRECIACION
 

backend/api/v1/modules/a76/items/schemas.py

@@ -203,7 +203,7 @@ class LineItemBase(BaseModel):
     guide_number: Optional[str] = Field(None, max_length=50, description="Guide number")
 
     # Dates
-    depreciation_date: Optional[int] = Field(None, description="Depreciation date")
+    depreciation_date: Optional[datetime] = Field(None, description="Depreciation date")
 
     # Administrative fields
     rectification: Optional[int] = Field(None, description="Rectification")

frontend/src/lib/api/dashboard/a76/items.ts

@@ -192,7 +192,7 @@ export interface Item {
     reference_number?: string;
     order?: string;
     guide_number?: string;
-    depreciation_date?: number;
+    depreciation_date?: string;
     rectification?: number;
     warehouse?: string;
     location?: string;