List External Accounts

curl --request GET \
  --url https://api.useswift.dev/external_accounts \
  --header 'Authorization: Bearer <token>'

{
  "data": [
    {
      "account_number": "12345678",
      "created_at": "2024-01-31T23:59:59Z",
      "description": "My External Account",
      "id": "external_account_vjb43lkAdf934jb13Df93",
      "is_rtp_enabled": true,
      "routing_number": "12345678",
      "verification_status": "verified"
    }
  ],
  "next_cursor": "Y3Vyc29y"
}