Log Message:
py-jedi: updated to 0.17.1

0.17.1:
- Django ``Model`` meta class support
- Django Manager support (completion on Managers/QuerySets)
- Added Django Stubs to Jedi, thanks to all contributors of the
  `Django Stubs <https://github.com/typeddjango/django-stubs>`_ project
- Added ``SyntaxError.get_message``
- Python 3.9 support
- Bugfixes (mostly towards Generics)