fix: add missing _APP_EMAIL_CERTIFICATES env var to deletes worker

The deletes worker uses the certificates resource to delete
certificates, but the certificates resource requires the
_APP_EMAIL_CERTIFICATES env var to be set or it will throw an exception
and not process any delete jobs. This commit adds the missing env var
to the deletes worker.

Also add _APP_SYSTEM_SECURITY_EMAIL_ADDRESS as a fallback.

app/views/install/compose.phtml

@@ -342,6 +342,8 @@ $image = $this->getParam('image', '');
       - _APP_MAINTENANCE_RETENTION_ABUSE
       - _APP_MAINTENANCE_RETENTION_AUDIT
       - _APP_MAINTENANCE_RETENTION_EXECUTION
+      - _APP_SYSTEM_SECURITY_EMAIL_ADDRESS
+      - _APP_EMAIL_CERTIFICATES
 
   appwrite-worker-databases:
     image: <?php echo $organization; ?>/<?php echo $image; ?>:<?php echo $version."\n"; ?>