chore: Fix import sorting for code_execution_utils.py

Signed-off-by: Josh Soref <2119212+jsoref@users.noreply.github.com>

Author: jsoref

src/google/adk/code_executors/code_execution_utils.py

@@ -21,8 +21,7 @@
 import copy
 import dataclasses
 import re
-from typing import List
-from typing import Optional
+from typing import List, Optional
 
 from google.genai import types