style: fix import order to satisfy Ruff check

api/tests/unit_tests/repositories/workflow_node_execution/test_sqlalchemy_repository.py

@@ -4,8 +4,8 @@ Unit tests for the SQLAlchemy implementation of WorkflowNodeExecutionRepository.
 
 import json
 from datetime import datetime
-from unittest.mock import MagicMock, PropertyMock
 from decimal import Decimal
+from unittest.mock import MagicMock, PropertyMock
 
 import pytest
 from pytest_mock import MockerFixture