Data Action timeout hardcoded to 3s? Can't increase limit

Running a Data Action in Architect that hits an external API. The response time is consistently around 5000ms, but the action fails with a 408 timeout error. The JSON payload looks fine, but the default timeout seems locked at 3000ms. Is there a property in the Data Action config to bump this limit?

{
 "method": "GET",
 "url": "https://api.example.com/data",
 "timeout": 5000
}