[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

src/python_workflow_definition/models.py

@@ -1,7 +1,7 @@
 import json
 import logging
 from pathlib import Path
-from typing import Annotated, Any, Literal, TypeVar, Union, Optional
+from typing import Annotated, Any, Literal, Optional, TypeVar
 
 from pydantic import (
     BaseModel,