Chore: release 1.8.6

- Bump version to 1.8.6 in tftest.py
- Add publish-pypi GitHub Action workflow
- Update changelog

Author: ludoo

tftest.py

@@ -36,7 +36,7 @@
 from pathlib import Path
 from typing import Any, Dict, List, Optional, Union
 
-__version__ = '1.8.5'
+__version__ = '1.8.6'
 
 _LOGGER = logging.getLogger('tftest')