Update libsass to 0.22.0

[pyup-bot]

This PR updates libsass from 0.21.0 to 0.22.0.

Changelog

0.22.0

--------------

Released on November 12, 2022.

- Remove python 2.x support [:issue:`373` by anthony sottile].
- Remove deprecated ``sassc`` cli [:issue:`379` by anthony sottile].

Links

• PyPI: https://pypi.org/project/libsass
• Changelog: https://pyup.io/changelogs/libsass/
• Repo: https://github.com/sass/libsass-python/releases

[pyup-bot]

Closing this in favor of #1711