Update whitenoise to 6.1.0

[pyup-bot]

This PR updates whitenoise from 5.2.0 to 6.1.0.

Changelog

6.1.0

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

* Drop support for Django 2.2, 3.0, and 3.1.

6.0.0

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

* Drop support for Python 3.5 and 3.6.

* Add support for Python 3.9 and 3.10.

* Drop support for Django 1.11, 2.0, and 2.1.

* Add support for Django 4.0.

* Import new MIME types from Nginx, changes:

- ``.avif`` files are now served with the ``image/avif`` MIME type.

- Open Document files with extensions ``.odg``, ``.odp``, ``.ods``, and
 ``.odt`` are now served with their respective
 ``application/vnd.oasis.opendocument.*`` MIME types.

* The ``whitenoise.__version__`` attribute has been removed. Use
``importlib.metadata.version()`` to check the version of Whitenoise if you
need to.

* Requests using the ``Range`` header can no longer read beyond the end of the
requested range.

Thanks to Richard Tibbles in `PR 322 <https://github.com/evansd/whitenoise/pull/322>`__.

* Treat empty and ``"*"`` values for ``Accept-Encoding`` as if the client doesn’t support any encoding.

Thanks to Richard Tibbles in `PR 323 <https://github.com/evansd/whitenoise/pull/323>`__.

5.3.0

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

* Gracefully handle unparsable If-Modified-Since headers (thanks
`danielegozzi <https://github.com/danielegozzi>`_).
* Test against Django 3.2 (thanks `jhnbkr <https://github.com/jhnbkr>`_).
* Add mimetype for Markdown (``.md``) files (thanks `bz2
<https://github.com/bz2>`_).
* Various documentation improvements (thanks `PeterJCLaw
<https://github.com/PeterJCLaw>`_ and `AliRn76
<https://github.com/AliRn76>`_).

Links

• PyPI: https://pypi.org/project/whitenoise
• Changelog: https://pyup.io/changelogs/whitenoise/
• Repo: https://github.com/evansd/whitenoise

[pyup-bot]

Closing this in favor of #30