GraphQL-631: Schema inconsistency of "Quantity / Qty" declaration

Author: naydav

dev/tests/api-functional/testsuite/Magento/GraphQl/Quote/Customer/UpdateCartItemsTest.php

@@ -285,7 +285,7 @@ public function dataProviderUpdateWithMissedRequiredParameters(): array
             ],
             'missed_cart_item_qty' => [
                 'cart_items: [{ cart_item_id: 1 }]',
-                'Field CartItemUpdateQuantityInput.quantity of required type Float! was not provided.'
+                'Field CartItemUpdateInput.quantity of required type Float! was not provided.'
             ],
         ];
     }

dev/tests/api-functional/testsuite/Magento/GraphQl/Quote/Guest/UpdateCartItemsTest.php

@@ -236,7 +236,7 @@ public function dataProviderUpdateWithMissedRequiredParameters(): array
             ],
             'missed_cart_item_qty' => [
                 'cart_items: [{ cart_item_id: 1 }]',
-                'Field CartItemUpdateQuantityInput.quantity of required type Float! was not provided.'
+                'Field CartItemUpdateInput.quantity of required type Float! was not provided.'
             ],
         ];
     }