Log Message:
chat/py-xmpppy: Update to 0.7.1

2022-04-10 0.7.1
================
- Use ``six.ensure_str()`` and ``six.ensure_binary()`` instead of custom \ 
decoding. Thanks, @normanr!
- Fix Non-SASL (XEP-0078) authentication for Python 3. Thanks, @smudge1977!
- Add ``B64`` shortcut function to streamline base64 encoding.