Configurable timeout on prom-frontend

Hello,

We have recently switched to using the `datasource-syncer` instead of prom-frontend for our Grafana instance to take advantage of higher query timeouts. Is it possible to do something similar for the prom-adapter? We are running into the 30s query timeout in prom-frontend right now, and would like to take advantage of the 120s timeout of querying GMP directly. Is this something that we could do?

Thanks!