hunter/main: increase metric timeout

stream_token has low fluctuation, it was disappearing from the stats.

hunter/src/main.rs

@@ -37,7 +37,7 @@ async fn run() {
     PrometheusBuilder::new()
         .with_http_listener(([0; 8], config.prometheus_port))
         .add_global_label("application", env!("CARGO_PKG_NAME"))
-        .idle_timeout(MetricKindMask::ALL, Some(Duration::from_secs(600)))
+        .idle_timeout(MetricKindMask::ALL, Some(Duration::from_secs(6 * 3600)))
         .install()
         .unwrap();