Use job-config.json version of nodejs when building plugin registry (not hardcoded value)

In https://github.com/redhat-developer/devspaces/pull/797 we are adding a offline openvsx registry, which needs to be built w/ nodejs 16.

However the version right now is hardcoded to 16.17.1 but https://github.com/redhat-developer/devspaces/blob/devspaces-3-rhel-8/dependencies/job-config.json#L778 uses 16.13.2.

So... should look at both updating the version in job-config.json for 3.3+, and also reusing that version when building the plugin reg (generate the correct jenkins job param value and pass that to the docker build).