Actualizar una sesión de checkout

curl -X PUT "https://example.com/ucp/checkout-sessions/7204558912004325301" \  -H "Authorization: Bearer <token>" \  -H "x-Store-Domain: my-store" \  -H "UCP-Agent: profile="https://agent.example/.well-known/ucp"" \  -H "Idempotency-Key: checkout-2026-0001" \  -H "Content-Type: application/json" \  -d '{    "line_items": [      {        "item": {          "id": "7204558912004325301",          "title": "Example title",          "price": 1,          "quantity_unit": {            "unit": "example",            "display_text": "example",            "scale": 1,            "increment": 1          },          "unit_price": {            "amount": 1,            "currency": "PEN",            "measure": {              "value": 1,              "unit": "example",              "display_text": "example",              "scale": 1            },            "reference": {              "value": 1,              "unit": "example",              "display_text": "example",              "scale": 1            }          },          "image_url": "https://example.com/resource"        },        "quantity": 1,        "id": "7204558912004325301",        "totals": [          {            "type": "example",            "amount": 1,            "display_text": "example",            "lines": [              {                "display_text": "example",                "amount": 1              }            ]          }        ],        "parent_id": "7204558912004325301"      }    ],    "buyer": {      "first_name": "Example resource",      "last_name": "Example resource",      "email": "andrea@example.com",      "phone_number": "+51987654321"    },    "context": {      "currency": "PEN",      "address_country": "example",      "address_region": "example",      "postal_code": "example_code",      "intent": "example",      "language": "es",      "eligibility": [        "example"      ]    },    "signals": {      "dev.ucp.buyer_ip": "example",      "dev.ucp.user_agent": "example"    },    "attribution": {},    "payment": {      "instruments": [        {          "id": "7204558912004325301",          "handler_id": "7204558912004325301",          "type": "example",          "selected": false,          "billing_address": {},          "credential": {},          "display": {}        }      ]    },    "fulfillment": {      "methods": [        {          "id": "7204558912004325301",          "type": "example",          "line_item_ids": [            "example"          ],          "destinations": [            {              "id": "7204558912004325301",              "type": "example",              "name": "Example resource",              "address": {                "extended_address": "example",                "street_address": "example",                "address_locality": "example",                "address_region": "example",                "address_country": "example",                "postal_code": "example_code",                "first_name": "Example resource",                "last_name": "Example resource"              },              "extended_address": "example",              "street_address": "example",              "address_locality": "example",              "address_region": "example"            }          ],          "selected_destination_id": "7204558912004325301",          "groups": [            {              "id": "7204558912004325301",              "line_item_ids": [                "example"              ],              "options": [                {                  "id": "7204558912004325301",                  "title": "Example title",                  "description": {                    "plain": "example",                    "html": "example",                    "markdown": "example"                  },                  "carrier": "example",                  "earliest_fulfillment_time": "example",                  "latest_fulfillment_time": "example",                  "totals": [                    {                      "type": "example",                      "amount": 1,                      "display_text": "example",                      "lines": [                        {                          "display_text": "example",                          "amount": 1                        }                      ]                    }                  ]                }              ],              "selected_option_id": "7204558912004325301"            }          ]        }      ],      "available_methods": [        {          "type": "example",          "line_item_ids": [            "example"          ],          "fulfillable_on": "example",          "description": "Example description."        }      ]    }  }'