Allows shortcodes in the product vendor's description

functions.php

/**
 * Allows shortcodes in the product vendor's description
 * 
 * @param string $desc
 * @return string
 */
function wc_vendors_use_sc_in_desc( $desc ) {
    return do_shortcode( $desc );
}
add_filter( 'product_vendors_page_description', 'wc_vendors_use_sc_in_desc' );
add_filter( 'product_vendors_tab_description', 'wc_vendors_use_sc_in_desc' );