Bump whitenoise from 5.2.0 to 5.3.0

[dependabot-preview[bot]]

Bumps whitenoise from 5.2.0 to 5.3.0.

Changelog

Sourced from whitenoise's changelog.

v5.3.0

• Gracefully handle unparsable If-Modified-Since headers (thanks @​danielegozzi).
• Test against Django 3.2 (thanks @​jhnbkr).
• Add mimetype for Markdown (.md) files (thanks @​bz2).
• Various documentation improvements (thanks @​PeterJCLaw and @​AliRn76).

Commits

• 0632866 Release version 5.3.0
• c8b49a2 Merge pull request #281 from jhnbkr/master
• 870813f Merge pull request #267 from bz2/media_md
• e504d4a Merge pull request #287 from danielegozzi/master
• 5b58695 Ignore unparsable If-Modified-Since headers and return the file
• d1868be Added support for Django 3.2
• 855c05e Merge pull request #278 from PeterJCLaw/secure-links
• 5fb5d57 Make these various links secure
• de827c9 Merge pull request #269 from AliRn76/master
• cc49b0b Update the STATIC_ROOT for Django 3.1
• Additional commits viewable in compare view

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