Change the heading of the Pods "More Fields" metabox in the post editor.

pods_metabox_title.php

<?php
add_filter( 'pods_meta_default_box_title', 'slug_pods_metabox_title' );
slug_pods_metabox_title( $title ) {
$title = __( 'Return of The Jedi', 'pods' );
return $title;
}