fix: reduce unnecessary timeouts

Intensive throttling might result in heartbeats being sent only once a minute. This change adjusts the timeout to 90 seconds. For more information, see https://developer.chrome.com/blog/timer-throttling-in-chrome-88
Thank you, @e-nikolov.

Closes #431.

src/config/index.ts

@@ -25,7 +25,7 @@ const defaultConfig: IConfig = {
 	host: "::",
 	port: 9000,
 	expire_timeout: 5000,
-	alive_timeout: 60000,
+	alive_timeout: 90000,
 	key: "peerjs",
 	path: "/",
 	concurrent_limit: 5000,