Data Action timeout hardcoded to 3s? Calls taking 5s fail

Stuck with the default 3-second timeout on an HTTP POST data action. The endpoint is a simple webhook that takes about 5 seconds to process and return a 200 OK. Genesys cuts the connection immediately with a timeout error.

{
 "type": "httpPost",
 "url": "https://external-api.com/webhook",
 "timeout": 3000
}

Can’t find a setting to bump this limit. Is there a property I’m missing or is it capped globally?