fixup: invalid variable name

tests/repository/test_transaction_repo.py

@@ -38,5 +38,5 @@ def test_fetch_transaction_by_number_fraudulent(db_session, fraudulent_transacti
     number = fraudulent_transaction_in_db.transaction_number
     transaction = fetch_transaction_by_number(db=db_session, transaction_number=number)
     assert transaction is not None
-    assert transaction.id == id
+    assert transaction.transaction_number == number
     assert transaction.fraud_details is not None, "Transaction should have fraud details"