chore(fetcher): use queue limit of 10 again :)

queuing too long results in a bad experience. and often there are other
non-blocked sources too, so people can choose those. or self-host.

src/utils/Fetcher.ts

@@ -28,7 +28,7 @@ export class Fetcher {
 
   constructor(logger: winston.Logger, queueLimit?: number, timeout?: number) {
     this.logger = logger;
-    this.queueLimit = queueLimit ?? 30;
+    this.queueLimit = queueLimit ?? 10;
     this.timeout = timeout ?? 10000;
 
     this.httpCache = new TTLCache();