Use return type deduction for timers

Fix updates to Node.js timers types breaking the TypeScript build by
deducing the correct type from the return type of the
setTimeout/setInterval functions.

packages/controller/src/WsServerConnector.ts

@@ -17,7 +17,7 @@ export interface WebSocketClusterio extends WebSocket {
  * @alias module:controller/src/WsServerConnector
  */
 export default class WsServerConnector extends lib.WebSocketBaseConnector {
-	_timeoutId: NodeJS.Timeout | null = null;
+	_timeoutId: ReturnType<typeof setTimeout> | null = null;
 	declare _socket: WebSocketClusterio | null;
 
 	constructor(