Fix import order in knowledge_test.py

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

tests/knowledge/knowledge_test.py

@@ -1,9 +1,9 @@
 """Test Knowledge creation and querying functionality."""
 
+import sys
 from pathlib import Path
 from typing import List, Union
 from unittest.mock import patch
-import sys
 
 import pytest