fix: update transaction if fraud

src/repository/fraud_details_repo.py

@@ -20,6 +20,8 @@ def insert_fraud(db: Connection,
     fraud.notification_datetime = None
     fraud.fraud_score = fraud_score
     fraud.model_version = model_version
+
+    transaction.is_fraud = True
     
     db.add(fraud)
     db.commit()