Update idna to 3.8

[pyup-bot]

This PR updates idna from 3.7 to 3.8.

Changelog

3.8

++++++++++++++++

- Fix regression where IDNAError exception was not being produced for
certain inputs.
- Add support for Python 3.13, drop support for Python 3.5 as it is no
longer testable.
- Documentation improvements
- Updates to package testing using Github actions

Thanks to Hugo van Kemenade for contributions to this release.

Links

• PyPI: https://pypi.org/project/idna
• Changelog: https://data.safetycli.com/changelogs/idna/

[pyup-bot]

Closing this in favor of #141