How to wrap the breadcrumb items with span tag?

[70599]

I have tried code like this, but not working.

add_filter('structuring_markup_meta_breadcrumb', function($out) {
	$out	= str_replace('<li>', '<li><span>', $out);
	$out	= str_replace('</li>', '</span><li>', $out);
	return $out;
});