Update install.sh

Author: julian-siebert

install.sh

@@ -14,4 +14,6 @@ if [ "$LATEST_BUILD" != "null" ]; then
     echo "Download completed"
 else
     echo "No stable build for version $MINECRAFT_VERSION found :("
-fi
+fi
+
+curl -o viaversion.jar https://hangarcdn.papermc.io/plugins/ViaVersion/ViaVersion/versions/5.4.1/PAPER/ViaVersion-5.4.1.jar