Enable schedule for new sync process (#4992)

# What this PR does
Replaces old scheduled sync task with new one.

## Which issue(s) this PR closes

Related to [issue link here]

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## Checklist

- [ ] Unit, integration, and e2e (if applicable) tests updated
- [ ] Documentation added (or `pr:no public docs` PR label added if not
required)
- [ ] Added the relevant release notes label (see labels prefixed w/
`release:`). These labels dictate how your PR will
    show up in the autogenerated release notes.

engine/settings/base.py

@@ -571,7 +571,7 @@ CELERY_BEAT_SCHEDULE = {
         "args": (),
     },
     "start_sync_organizations": {
-        "task": "apps.grafana_plugin.tasks.sync.start_sync_organizations",
+        "task": "apps.grafana_plugin.tasks.sync_v2.start_sync_organizations_v2",
         "schedule": crontab(minute="*/30"),
         "args": (),
     },