Update charset-normalizer to 2.0.6

[pyup-bot]

This PR updates charset-normalizer from 2.0.4 to 2.0.6.

Changelog

2.0.6

*Changes:*

- **Bugfix:** :bug:  Unforeseen regression with the loss of the backward-compatibility with some older minor of Python 3.5.x 100 
- **Bugfix:** :bug: Fix CLI crash when using --minimal output in certain cases 103
- **Improvement:** :sparkles: Minor improvement to the detection efficiency (less than 1%) 106 101

2.0.5

*Changes:*

**Internal:** :art: The project now comply with: flake8, mypy, isort and black to ensure a better overall quality 81 
**Internal:** :art: The MANIFEST.in was not exhaustive 78 
**Improvement:** :sparkles: The BC-support with v1.x was improved, the old staticmethods are restored 82 
**Remove:** :fire: The project no longer raise warning on tiny content given for detection, will be simply logged as warning instead 92 
**Improvement:** :sparkles: The Unicode detection is slightly improved, see 93 
**Bugfix:** :bug: In some rare case, the chunks extractor could cut in the middle of a multi-byte character and could mislead the mess detection 95 
**Bugfix:** :bug: Some rare 'space' characters could trip up the `UnprintablePlugin`/Mess detection 96 
**Improvement:** :art: Add syntax sugar \_\_bool\_\_ for results `CharsetMatches` list-container see 91 

This release push further the detection coverage to 97 % !

Links

• PyPI: https://pypi.org/project/charset-normalizer
• Changelog: https://pyup.io/changelogs/charset-normalizer/
• Repo: https://github.com/ousret/charset_normalizer

[pyup-bot]

Closing this in favor of #430