prune older than 2 years instead of 12 months

app/workers/prune_old_events_worker.rb

@@ -13,7 +13,7 @@ class PruneOldEventsWorker
       '(id IN (SELECT id FROM (?) ids_to_remove))',
       Event.unscoped.where(
         'created_at < ?',
-        (12.months + 1.day).ago)
+        (2.years + 1.day).ago)
       .select(:id)
       .limit(10_000))
     .delete_all