Update src/google/adk/tools/mcp_tool/mcp_session_manager.py

Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

Author: mikeedjones

src/google/adk/tools/mcp_tool/mcp_session_manager.py

@@ -102,7 +102,7 @@ class StreamableHTTPConnectionParams(BaseModel):
         when the connection is closed.
   """
 
-  model_config = ConfigDict(arbitrary_types_allowed=True, )
+  model_config = ConfigDict(arbitrary_types_allowed=True)
 
   url: str
   headers: dict[str, Any] | None = None