clearsessions cron

Sessions are stored in the database. From the Django documentation:

"""
Django does not provide automatic purging of expired sessions. Therefore, it’s your job to purge expired sessions on a regular basis. Django provides a clean-up management command for this purpose: [clearsessions](https://docs.djangoproject.com/en/6.0/ref/django-admin/#django-admin-clearsessions). It’s recommended to call this command on a regular basis, for example as a daily cron job.
"""

Celery task. Once per week should be enough, rather than daily, the table is small.

command: ["python", "manage.py", "clearsessions"]