[UPDATE] Update redis[hiredis] requirement

Updates the requirements on [redis[hiredis]](https://github.com/redis/redis-py) to permit the latest version.
- [Release notes](https://github.com/redis/redis-py/releases)
- [Changelog](https://github.com/redis/redis-py/blob/master/CHANGES)
- [Commits](https://github.com/redis/redis-py/compare/v5.3.0...v6.2.0)

---
updated-dependencies:
- dependency-name: redis[hiredis]
  dependency-version: 6.2.0
  dependency-type: direct:production
...

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

pyproject.toml

@@ -44,7 +44,7 @@ dependencies = [
     "django-honeypot>=1.3.0,<2",
     "pydantic-extra-types<3.0.0,>=2.10.3",
     "ical>=10.0.3,<11",
-    "redis[hiredis]<6.0.0,>=5.3.0",
+    "redis[hiredis]>=5.3.0,<7.0.0",
     "environs[django]<15.0.0,>=14.1.1",
     "requests>=2.32.3",
     "honcho>=2.0.0",