Use new APT key handling

[saz]

This module should use the new APT key handling.

I'm happy to create a PR for this, but I'd also prefer a way to use a different key source.

My suggestion would be, to add a parameter repo_key_source to the nodejs class.

Are there any other things within the APT repo config, which should be manageable?

[saz]

I guess, arch should be set properly:

N: Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'https://deb.nodesource.com/node_20.x nodistro InRelease' doesn't support architecture 'i386'