Only call update() on cycles when we sync LEDs

Since LED modes only send updates to the hardware at `syncDelay` intervals, calling
`update()` on the active mode every cycle doesn't make animations any smoother.

Signed-off-by: Michael Richters <gedankenexperimenter@gmail.com>

src/kaleidoscope/plugin/LEDControl.cpp

@@ -176,8 +176,8 @@ kaleidoscope::EventHandlerResult LEDControl::beforeReportingState(void) {
   if (elapsed > syncDelay) {
     syncLeds();
     syncTimer += syncDelay;
+    update();
   }
-  update();
 
   return kaleidoscope::EventHandlerResult::OK;
 }