Move release docker host

[ryanaslett]

Sub issue of #3597

I've rebuilt the ubuntu1804_docker-x64-1 host with ubuntu2404, and its docker containers are running and connected to ci-release.nodejs.org.

It appears as though there are two containers, but only one is being used right now (the iojs+release job shows the cross-compiler-ubuntu1804-armv7-gcc-[6,8] jobs as disabled

I have marked both https://ci-release.nodejs.org/computer/release%2Dmnx%2Dubuntu1804%5Farm%5Fcross%5Fcontainer%2Dx64%2D2/ and https://ci-release.nodejs.org/computer/release%2Dmnx%2Dubuntu1804%5Farm%5Fcross%5Fcontainer%2Dx64%2D2/

As offline until we're ready to flip them on and test.

Im unsure the standard procedure here (enable the new ones, disable the old ones and wait for the daily build to run? or can we rebuild a previous build to test the new containers' validity?)