Update django-redis requirement from <5.3,>=4.12 to >=4.12,<5.4

Updates the requirements on [django-redis](https://github.com/jazzband/django-redis) to permit the latest version.
- [Release notes](https://github.com/jazzband/django-redis/releases)
- [Changelog](https://github.com/jazzband/django-redis/blob/master/CHANGELOG.rst)
- [Commits](https://github.com/jazzband/django-redis/compare/4.12.0...5.3.0)

---
updated-dependencies:
- dependency-name: django-redis
  dependency-type: direct:production
...

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

requirements.txt

 # Sandbox
 Whoosh>=2.7,<2.8
 django-environ>=0.4,<0.11
-django-redis>=4.12,<5.3
+django-redis>=4.12,<5.4
 pysolr>=3.9,<3.10
 redis>=3.5,<4.6
 requests>=2.25,<3