The is_ajax function is deprecated since version 6.1.0. Replace wit

Hi,
It seems your plugin is not updated with latests wc changes, I’ve got logs full of

PHP message: The is_ajax function is deprecated since version 6.1.0. Replace with wp_doing_ajax

./wp-content/plugins/facebook-for-woocommerce/class-wc-facebookcommerce.php:                            if ( is_ajax() ) {
./wp-content/plugins/facebook-for-woocommerce/vendor/skyverge/wc-plugin-framework/woocommerce/Lifecycle.php:            if ( is_admin() && ! is_ajax() ) {
./wp-content/plugins/facebook-for-woocommerce/vendor/skyverge/wc-plugin-framework/woocommerce/class-sv-wc-helper.php:           if ( is_callable( 'is_ajax' ) && is_ajax() ) {
./wp-content/plugins/facebook-for-woocommerce/includes/Products/Sync.php:               if ( is_admin() && ! is_ajax() ) {
./wp-content/plugins/facebook-for-woocommerce/facebook-commerce.php:            if ( ( ! is_ajax() || ! isset( $_POST['action'] ) || 'ajax_delete_fb_product' !== $_POST['action'] )

Coulmd you please give a quick look ?
thanks