Fully implemented disposing on devices

RGB.NET.Devices.Asus_Legacy/AsusDeviceProvider.cs

@@ -268,6 +268,9 @@ namespace RGB.NET.Devices.Asus
         /// <inheritdoc />
         public void Dispose()
         {
+            try { UpdateTrigger?.Dispose(); }
+            catch { /* at least we tried */ }
+
             try { _AsusSDK.UnloadAsusSDK(); }
             catch { /* at least we tried */ }
         }

RGB.NET.Devices.Asus_Legacy/Generic/AsusRGBDevice.cs

@@ -80,6 +80,9 @@ namespace RGB.NET.Devices.Asus
         /// <inheritdoc cref="AbstractRGBDevice{TDeviceInfo}.Dispose" />
         public override void Dispose()
         {
+            try { UpdateQueue?.Dispose(); }
+            catch { /* at least we tried */ }
+
             if ((DeviceInfo is AsusRGBDeviceInfo deviceInfo) && (deviceInfo.Handle != IntPtr.Zero))
                 Marshal.FreeHGlobal(deviceInfo.Handle);