Fix 1.20 REntity

SpigotCore_Main/src/de/steamwar/entity/REntity.java

@@ -140,7 +140,7 @@ public class REntity {
 
     private static final Class<?> animationPacket = Reflection.getClass("{nms.network.protocol.game}.PacketPlayOutAnimation");
     private static final Reflection.FieldAccessor<Integer> animationEntity = Reflection.getField(animationPacket, int.class, Core.getVersion() > 15 ? 6 : 0);
-    private static final Reflection.FieldAccessor<Integer> animationAnimation = Reflection.getField(animationPacket, int.class, Core.getVersion() > 15 ? 7 : 1);
+    private static final Reflection.FieldAccessor<Integer> animationAnimation = Reflection.getField(animationPacket, int.class, Core.getVersion() > 15 ? (Core.getVersion() > 19 ? 6 : 7) : 1);
     public void showAnimation(byte animation) {
         Object packet = Reflection.newInstance(animationPacket);
         animationEntity.set(packet, entityId);