curl --request POST \
  --url https://api.vocode.dev/v1/account_connections/update \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "type": "account_connection_twilio",
  "credentials": {
    "twilio_account_sid": "<string>",
    "twilio_auth_token": "<string>"
  }
}
'

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "user_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "credentials": {
    "twilio_account_sid": "<string>",
    "twilio_auth_token": "<string>"
  },
  "type": "account_connection_twilio",
  "steering_pool": [
    "<string>"
  ],
  "account_supports_any_caller_id": false
}