Trashbin filling up space quickly

My nextcloud install is used mostly for static data that doesn’t get much modifications or deletions. The problem is that the trashbin is filling up most of my disk space quickly. Around 10 / 15 GB per week. Temporarily I have created a cron job that empties it (trashbin:cleanup --all-users).
These are the settings related:

'trashbin_retention_obligation' => '30,60',
  'versions_retention_obligation' => 'auto,30',

Could it be relates to these settings?