Fix unnecessary allocation for HighResTimer

There's a minor optimization in HighResTimer where
we can avoid allocating a new EventArgs object every
time the timer elapses. Instead, we can use EventArgs.Empty
to reduce memory usage and improve performance which
is especially important in resource-constrained environments.

Signed-off-by: Anton Kulikov <[email protected]>

Author: axtox

nanoFramework.Hardware.Esp32/HighResTimer.cs

@@ -50,7 +50,7 @@ internal void OnHighResTimerExpiredInternal(object e)
                 }
             }
 
-            callbacks?.Invoke(this, new EventArgs());
+            callbacks?.Invoke(this, EventArgs.Empty);
         }
 
         /// <summary>