Update easy-thumbnails to 2.8

[pyup-bot]

This PR updates easy-thumbnails from 2.7 to 2.8.

Changelog

2.8.0

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* Add support for thumbnailing SVG images. This is done by adding an emulation layer named VIL,
which aims to be compatible with PIL. All thumbnailing operations, such as scaling and cropping
behave like pixel images.

2.7.2

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* Add support for Django 3.2 and Python-3.10.
* Fix 563: Do not close image after loading content.
* In management command `thumbnail_cleanup`, replace `print`-statements against `stdout.write`.
* Use Python format strings whereever possible.

2.7.1

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* Add support for Django 3.1

Links

• PyPI: https://pypi.org/project/easy-thumbnails
• Changelog: https://pyup.io/changelogs/easy-thumbnails/
• Repo: http://github.com/SmileyChris/easy-thumbnails
• Docs: https://pythonhosted.org/easy-thumbnails/