[issue46456] Add mime type "image/avif"

[jiahua wang]

New submission from jiahua wang <wjh180909 at gmail.com>:

https://www.iana.org/assignments/media-types/image/avif

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components: Library (Lib)
messages: 411134
nosy: wangjiahua
priority: normal
severity: normal
status: open
title: Add mime type "image/avif"
versions: Python 3.11

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue46456>
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