minor: ruff format

Tabs -> spaces

src/contact/exceptions.py

@@ -11,13 +11,13 @@ from fastapi import HTTPException, status
 
 
 class ContactNotFoundException(HTTPException):
-	def __init__(self, contact_id: Optional[int] = None) -> None:
-		detail = (
-			"Contact not found"
-			if contact_id is None
-			else f"Contact with ID '{contact_id}' was not found."
-		)
-		super().__init__(
-			status_code=status.HTTP_404_NOT_FOUND,
-			detail=detail,
-		)
+    def __init__(self, contact_id: Optional[int] = None) -> None:
+        detail = (
+            "Contact not found"
+            if contact_id is None
+            else f"Contact with ID '{contact_id}' was not found."
+        )
+        super().__init__(
+            status_code=status.HTTP_404_NOT_FOUND,
+            detail=detail,
+        )