sentinel updates

app/Models/InstanceSettings.php

@@ -21,6 +21,7 @@ class InstanceSettings extends Model implements SendsEmail
         'is_auto_update_enabled' => 'boolean',
         'auto_update_frequency' => 'string',
         'update_check_frequency' => 'string',
+        'sentinel_token' => 'encrypted',
     ];
 
     public function fqdn(): Attribute