Bump django-celery-results from 2.3.1 to 2.4.0 in /requirements

Bumps [django-celery-results](https://github.com/celery/django-celery-results) from 2.3.1 to 2.4.0.
- [Release notes](https://github.com/celery/django-celery-results/releases)
- [Changelog](https://github.com/celery/django-celery-results/blob/master/Changelog)
- [Commits](celery/django-celery-results@v2.3.1...v2.4.0)

---
updated-dependencies:
- dependency-name: django-celery-results
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

requirements/base_requirements.txt

@@ -53,7 +53,7 @@ redis==4.5.1  # https://github.com/antirez/redis
 #amqp==1.4.9
 #kombu==3.0.37
 celery==5.2.7
-django-celery-results==2.3.1
+django-celery-results==2.4.0
 django-celery-beat==2.2.1
 
 # Your custom requirements go here