Fix lint error: sort imports in test file

Co-Authored-By: Joe Moura <joao@crewai.com>

tests/litellm_tests/test_encoding.py

@@ -2,7 +2,7 @@ import json
 import os
 import sys
 import unittest
-from unittest.mock import patch, mock_open
+from unittest.mock import mock_open, patch
 
 import pytest