List external accounts

curl --request GET \
  --url https://api.enterprise.sandbox.uphold.com/core/external-accounts \
  --header 'Authorization: Bearer <token>'

{
  "externalAccounts": [
    {
      "id": "aa6e6efa-8d73-497c-8278-0347f459bd68",
      "ownerId": "1e32fca3-23f7-40ed-bc1b-de10c790182d",
      "type": "card",
      "status": "ok",
      "label": "My Visa Card",
      "asset": "GBP",
      "network": "visa",
      "features": [
        "deposit",
        "withdraw"
      ],
      "details": {
        "type": "debit",
        "last4Digits": "1519",
        "expiryDate": {
          "month": 12,
          "year": 2030
        }
      },
      "createdAt": "2024-06-02T00:00:00Z",
      "updatedAt": "2024-07-15T00:00:00Z"
    },
    {
      "id": "1e32fca3-23f7-40ed-bc1b-de10c790182d",
      "ownerId": "1e32fca3-23f7-40ed-bc1b-de10c790182d",
      "type": "card",
      "status": "ok",
      "label": "My Mastercard Card",
      "asset": "GBP",
      "network": "mastercard",
      "features": [
        "deposit"
      ],
      "details": {
        "type": "credit",
        "last4Digits": "2311",
        "expiryDate": {
          "month": 3,
          "year": 2035
        }
      },
      "createdAt": "2024-06-01T00:00:00Z",
      "updatedAt": "2024-07-15T00:00:00Z"
    }
  ]
}