Raise packet tolerance in spam threshold patch

Fixes GH-462

Spigot-Server-Patches/Configurable-packet-in-spam-threshold.patch

@@ -34,7 +34,7 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
  
      private boolean checkLimit(long timestamp) {
 -        if (lastLimitedPacket != -1 && timestamp - lastLimitedPacket < 30 && limitedPackets++ >= 4) {
-+        if (lastLimitedPacket != -1 && timestamp - lastLimitedPacket < THRESHOLD && limitedPackets++ >= 4) { // Paper
++        if (lastLimitedPacket != -1 && timestamp - lastLimitedPacket < THRESHOLD && limitedPackets++ >= 8) { // Paper - Use threshold, raise packet limit to 8
              return false;
          }