chore(deps): update celery[redis] requirement from ~=5.4.0 to ~=5.6.2

Updates the requirements on [celery[redis]](https://github.com/celery/celery) to permit the latest version.
- [Release notes](https://github.com/celery/celery/releases)
- [Changelog](https://github.com/celery/celery/blob/main/Changelog.rst)
- [Commits](celery/celery@v5.4.0...v5.6.2)

---
updated-dependencies:
- dependency-name: celery[redis]
  dependency-version: 5.6.2
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pyproject.toml

@@ -11,7 +11,7 @@ requires-python = "~=3.13.2"
 
 dependencies = [
     "Django~=5.2",
-    "celery[redis]~=5.4.0",
+    "celery[redis]~=5.6.2",
     "flower", # celery-dashboard
     "django-celery-beat",
     "django-cors-headers",