Bump markdown from 3.6 to 3.7

Bumps [markdown](https://github.com/Python-Markdown/markdown) from 3.6 to 3.7.
- [Release notes](https://github.com/Python-Markdown/markdown/releases)
- [Changelog](https://github.com/Python-Markdown/markdown/blob/master/docs/changelog.md)
- [Commits](Python-Markdown/markdown@3.6...3.7)

---
updated-dependencies:
- dependency-name: markdown
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -6,7 +6,7 @@ django-s3sign==0.4.0
 pytz==2024.1
 httplib2==0.22.0
 feedparser==6.0.8
-Markdown==3.6 # pyup: < 3
+Markdown==3.7 # pyup: < 3
 versiontools==1.9.1
 statsd==4.0.1
 pep8==1.7.1