Set shippng method for all shipments
curl  --request  PATCH  \   --url  https://demo.spreecommerce.org/api/v2/storefront/checkout/select_shipping_method  \   --header  'Content-Type: application/vnd.api+json'  \   --header  'X-Spree-Order-Token: <api-key>'  \   --data  '{   "shipping_method_id": "1" }' {   "data" : {     "id" :  "17" ,     "type" :  "cart" ,     "attributes" : {       "number" :  "R233871560" ,       "item_total" :  "0.0" ,       "total" :  "0.0" ,       "ship_total" :  "0.0" ,       "adjustment_total" :  "0.0" ,       "created_at" :  "2021-09-28T22:15:07.471Z" ,       "updated_at" :  "2021-09-28T22:15:07.471Z" ,       "completed_at" :  null ,       "included_tax_total" :  "0.0" ,       "additional_tax_total" :  "0.0" ,       "display_additional_tax_total" :  "$0.00" ,       "display_included_tax_total" :  "$0.00" ,       "tax_total" :  "0.0" ,       "currency" :  "USD" ,       "state" :  "cart" ,       "token" :  "zTEpsukRq_yEUcXVCSv0uw1632867307450" ,       "email" :  null ,       "display_item_total" :  "$0.00" ,       "display_ship_total" :  "$0.00" ,       "display_adjustment_total" :  "$0.00" ,       "display_tax_total" :  "$0.00" ,       "promo_total" :  "0.0" ,       "display_promo_total" :  "$0.00" ,       "item_count" :  0 ,       "special_instructions" :  null ,       "display_total" :  "$0.00" ,       "pre_tax_item_amount" :  "0.0" ,       "display_pre_tax_item_amount" :  "$0.00" ,       "pre_tax_total" :  "0.0" ,       "display_pre_tax_total" :  "$0.00" ,       "shipment_state" :  null ,       "payment_state" :  null     },     "relationships" : {       "line_items" : {         "data" : []       },       "variants" : {         "data" : []       },       "promotions" : {         "data" : []       },       "payments" : {         "data" : []       },       "shipments" : {         "data" : []       },       "user" : {         "data" :  null       },       "billing_address" : {         "data" :  null       },       "shipping_address" : {         "data" :  null       }     }   } }