style: fix import order in apigee_llm.py via autoformat.sh

Author: polar3130

src/google/adk/models/apigee_llm.py

@@ -29,8 +29,8 @@
 from typing import Optional
 from typing import TYPE_CHECKING
 
-import google.auth
 from google.adk import version as adk_version
+import google.auth
 from google.genai import types
 import httpx
 import tenacity