Changes to Batch Adjust Inventory for Cart Products

removed BatchAdjustCartInventorySchema--Base__Schema-- from the request body oneOf list

added the new optional header request parameter Idempotency-Key

added BatchAdjustInventorycartProduct--Etsy-- BatchAdjustInventorycartProduct--JOOR-- BatchAdjustInventorycartProduct--OrderDesk-- BatchAdjustInventorycartProduct--Rithum__-__Home__Depot-- BatchAdjustInventorycartProduct--Shopify-- to the request body oneOf list

added the required property data/items/currency_code to the response with the 200 status

added the required property data/items/description to the response with the 200 status