Potential fix for pull request finding 'Empty except'

Co-authored-by: Copilot Autofix powered by AI <223894421+github-code-quality[bot]@users.noreply.github.com>

lib/crewai-core/src/crewai_core/token_manager.py

@@ -100,6 +100,8 @@ class TokenManager:
         try:
             storage_path.chmod(0o700)
         except OSError:
+            # Best-effort permission hardening only: some platforms/filesystems
+            # may reject chmod here, and token operations should still proceed.
             pass
 
         return storage_path