Update external account

curl --request PATCH \
  --url https://api.enterprise.sandbox.uphold.com/core/external-accounts/{externalAccountId} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '{
  "label": "My new VISA card"
}'

{
  "externalAccount": {
    "id": "aa6e6efa-8d73-497c-8278-0347f459bd68",
    "ownerId": "1e32fca3-23f7-40ed-bc1b-de10c790182d",
    "type": "card",
    "status": "ok",
    "label": "My new VISA card",
    "asset": "GBP",
    "network": "visa",
    "features": [
      "deposit",
      "withdraw"
    ],
    "details": {
      "type": "debit",
      "last4Digits": "1519",
      "expiryDate": {
        "month": 12,
        "year": 2030
      }
    },
    "createdAt": "2024-06-01T00:00:00Z",
    "updatedAt": "2024-07-15T00:00:00Z"
  }
}