[orx-rabbit-control] Upgrade netty to 4.2.2.Final

Avoid zero timeout values when shutting web server down
to avoid numerous WARN messages

gradle/libs.versions.toml

@@ -22,7 +22,7 @@ antlr = "4.13.2"
 antlrKotlin = "1.0.3"
 tensorflow = "0.5.0"
 minim = "2.2.2"
-netty = "4.2.1.Final"
+netty = "4.2.2.Final"
 rabbitcontrol = "0.3.39"
 zxing = "3.5.3"
 ktor = "3.1.3"

orx-jvm/orx-rabbit-control/src/main/kotlin/RabbitControlServer.kt

@@ -251,7 +251,7 @@ class RabbitControlServer(private val showQRUntilClientConnects: Boolean = true,
     override fun shutdown(program: Program) {
         transporter.dispose()
         rabbitholeTransporter?.dispose()
-        webServer?.stop(0, 0)
+        webServer?.stop(50, 50)
     }
 
     private fun getQRCodeImage(barcodeText: String): ColorBuffer {