Update django-storages to 1.11

[pyup-bot]

This PR updates django-storages from 1.10.1 to 1.11.

Changelog

1.11

*****************

General
-------

- Test against Python 3.9 (`964`_)

S3
--

- Fix ``ValueError: I/O operation on closed file`` when calling ``collectstatic`` (`382`_, `955`_)
- Calculate ``S3Boto3StorageFile.buffer_size`` (via setting ``AWS_S3_FILE_BUFFER_SIZE``)
at run-time rather than import-time. (`930`_)
- Fix writing ``bytearray`` content (`958`_, `965`_)

Google Cloud
------------

- Add setting ``GS_QUERYSTRING_AUTH`` to avoid signing URLs. This is useful for buckets with a
policy of Uniform public read (`952`_)

Azure
-----

- Add ``AZURE_OBJECT_PARAMETERS`` and overridable ``AzureStorage.get_object_parameters`` to customize
``ContentSettings`` parameters for all keys and per-key respectively. (`898`_)

.. _382: https://github.com/jschneier/django-storages/issues/382
.. _955: https://github.com/jschneier/django-storages/pull/955
.. _930: https://github.com/jschneier/django-storages/pull/930
.. _952: https://github.com/jschneier/django-storages/pull/952
.. _898: https://github.com/jschneier/django-storages/pull/898
.. _964: https://github.com/jschneier/django-storages/pull/964
.. _958: https://github.com/jschneier/django-storages/issues/958
.. _965: https://github.com/jschneier/django-storages/pull/965

Links

• PyPI: https://pypi.org/project/django-storages
• Changelog: https://pyup.io/changelogs/django-storages/
• Repo: https://github.com/jschneier/django-storages

[pyup-bot]

Closing this in favor of #1496