di.xml

<?xml version="1.0"?>
<!--
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
-->
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:ObjectManager/etc/config.xsd">
    <type name="Magento\Checkout\Block\Cart\LayoutProcessor">
        <plugin name="checkout_cart_shipping_plugin" type="Magento\OfflineShipping\Model\Plugin\Checkout\Block\Cart\Shipping"/>
    </type>
    <preference for="Magento\Quote\Model\Quote\Address\FreeShippingInterface" type="Magento\OfflineShipping\Model\Quote\Address\FreeShipping" />
</config>