ENGCOM-5069: 404 not found form validation url when updating quantity in cart page #22657

 - Merge Pull Request #22657 from gulshanchitransh/magento2:2.3-develop-pr2
 - Merged commits:
   1. 4b0e39d

Author: magento-engcom-team

app/code/Magento/Checkout/view/frontend/templates/cart/form.phtml

@@ -14,7 +14,7 @@
           method="post"
           id="form-validate"
           data-mage-init='{"Magento_Checkout/js/action/update-shopping-cart":
-              {"validationURL" : "/checkout/cart/updateItemQty",
+              {"validationURL" : "<?= /* @escapeNotVerified */ $block->getUrl('checkout/cart/updateItemQty') ?>",
               "updateCartActionContainer": "#update_cart_action_container"}
           }'
           class="form form-cart">