devel/py-dj50-django-rq: Update to 3.0.0

• Add SENTRY option to reflect the settings in setup.py. Keep it non-default for now because this port is currently only used by net-mgmt/netbox and it also has such an option, which is non-default as well.

Changelog:

https://github.com/rq/django-rq/releases/tag/v3.0

PR: 282649
MFH: No (contains breaking changes)