Change the recipient email for auto_core_update_email

auto_core_update_email.php

<?php
// change email of auto update notification
function filter_change_auto_update_email( $email ) {
	$email['to'] = 'username@example.com';
	return $email;
}
add_filter( 'auto_core_update_email', 'filter_change_auto_update_email', 1 );