increase plugin manifest fetch timeout to 2m

Author: JohnTheGr8

Flow.Launcher.Core/ExternalPlugins/PluginsManifest.cs

@@ -17,7 +17,7 @@ public static class PluginsManifest
         private static readonly SemaphoreSlim manifestUpdateLock = new(1);
 
         private static DateTime lastFetchedAt = DateTime.MinValue;
-        private static TimeSpan fetchTimeout = TimeSpan.FromSeconds(10);
+        private static TimeSpan fetchTimeout = TimeSpan.FromMinutes(2);
 
         public static List<UserPlugin> UserPlugins { get; private set; }