magento-test/app/code/Magento/GiftMessage/Test/Mftf/Section/StorefrontCheckoutCartGiftMessageSection.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
 /**
  * Copyright © Magento, Inc. All rights reserved.
  * See COPYING.txt for license details.
  */
-->
<sections xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:mftf:Page/etc/SectionObject.xsd">
    <section name="StorefrontCheckoutCartGiftMessageSection">
        <element name="giftItemMessage" type="textarea" selector="tbody.cart:nth-of-type({{blockNumber}}) .gift-message .field.text .input-text" parameterized="true"/>
    </section>
</sections>