Fix linting issues with import sorting

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

src/crewai/utilities/string_utils.py

@@ -1,5 +1,6 @@
 import re
 from typing import Any, Dict, List, Optional, Union
+
 from unidecode import unidecode
 
 

tests/test_agent_non_ascii.py

@@ -1,4 +1,5 @@
 import pytest
+
 from crewai.utilities import sanitize_collection_name