Fix linting issues by updating ruff configuration and adding linting test

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

tests/test_linting.py

@@ -0,0 +1,12 @@
+"""Test to verify that the linting configuration is working correctly."""
+import os
+from pathlib import Path
+
+
+def test_ruff_config_exists():
+    """Test that the ruff configuration file exists."""
+    repo_root = Path(__file__).parent.parent
+    ruff_config_path = repo_root / ".ruff.toml"
+    assert ruff_config_path.exists(), "Ruff configuration file (.ruff.toml) should exist"
+    
+    assert ruff_config_path.stat().st_size > 0, "Ruff configuration file should not be empty"