WooCommerce - Loop add to card text

functions.php

<?php

/**
 * Add to card text
 *
 * @param  string $text Default text.
 *
 * @return string       New text.
 */
function cs_woocommerce_product_add_to_cart_text( $text ) {
    return __( 'Novo texto do botão' );
}

add_filter( 'woocommerce_product_add_to_cart_text', 'cs_woocommerce_product_add_to_cart_text' );