Bump whitenoise from 5.2.0 to 6.3.0 in /backend

[dependabot]

Bumps whitenoise from 5.2.0 to 6.3.0.

Changelog

Sourced from whitenoise's changelog.

6.3.0 (2023-01-03)

• Add some video file extensions to be ignored during compression. Since such files are already heavily compressed, further compression rarely helps.

  Thanks to Jon Ribbens in PR [#431](https://github.com/evansd/whitenoise/issues/431) <https://github.com/evansd/whitenoise/pull/431>__.

• Remove the behaviour of decoding byte strings passed for settings that take strings. This seemed to be left around from supporting Python 2. This change may be backwards incompatible for a small number of projects.

• Document “hidden” feature of setting max_age to None to disable the Cache-Control header.

• Drop support for working as old-style Django middleware, as support was removed in Django 2.0 <https://docs.djangoproject.com/en/dev/releases/2.0/#features-removed-in-2-0>__.

6.2.0 (2022-06-05)

• Support Python 3.11.

• Support Django 4.1.

6.1.0 (2022-05-10)

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

6.0.0 (2022-02-10)

• 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.

... (truncated)

Commits

• e08b1c3 Version 6.3.0
• 6d4025e Changelog entry for 6.3.0
• 2fd41b3 Drop badges from docs index (missed update in beb7be8)
• 24cc31e Fix documented supported Python and Django versions
• 42a6523 Use Python 3.11 to run pre-commit hooks (#458)
• 392ded7 Upgrade requirements (#456)
• ff17888 Fix coverage config for version 7 (#455)
• beb7be8 Fix broken CI badge
• 3a579f2 Upgrade requirements (#454)
• 9997fcd [pre-commit.ci] pre-commit autoupdate (#453)
• Additional commits viewable in compare view

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