fix: properly format imports with ruff

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

tests/test_hierarchical_issue_fix.py

@@ -1,6 +1,7 @@
 """Test to ensure hierarchical process mode returns complete final answers."""
 
 import pytest
+
 from crewai.agent import Agent
 from crewai.crew import Crew
 from crewai.process import Process