[suggestion] bump node to v12

[duncdrum]

Node 10 is EOL, while we are replacing outdated dependencies, we should also use a more current LTS node version, we already have dependency PRs dropping node 10 it ll only get worse

[line-o]

I am very much in favour of this update. Is there a reason not to use node 14 right away?

[line-o]

The current LTS is 14.17.0 LTS

[duncdrum]

nope, if all our deps run on 14 no reason not to long jump