Update Node-RED from 3.1.1 to 4.0.0 on RPi failed

[GogoVega]

Node-RED 4.0 released

Just a quick note about the Docker containers. We had to drop s390x and the 32bit ARM builds because they would not build on the Github Actions hardware. The debian based build does have an ARMv7 build if you still need to run things on 32bit Raspberry Pi and Docker. I will try and see if we can get these to build again going forward, but no promises. If anybody wants to provide some dedicated build hardware get in touch...