chore: update Node version in Dockerfile
chore: update Node version in Dockerfile

SignalK/signalk-server-node,SignalK/signalk-server-node,SignalK/signalk-server-node,sbender9/signalk-server-node,sbender9/signalk-server-node,sbender9/signalk-server-node,SignalK/signalk-server-node,webmasterkai/signalk-server-node,webmasterkai/signalk-server-node,webmasterkai/signalk-server-node