Upgrade to node 16

[Zenoo]

Node 15 introduced some vulnerabilities:

Upgrading to v16 fixes those.

I also removed a line in the analysers file that caused the generation of the habits metrics to fail (which took me quite some time to figure out):

await imports.fs.rmdir(path, {recursive:true})

[lowlighter]

Thanks a lot for this PR 🙂

Seems there is an issue with community templates causing many tests to fail (probably comes from source/app/metrics/setup.mjs editions). I didn't dig it too much in details, but maybe rmdir and rm have slightly different behaviours ?

I had errors about removing unexisting dirs too but thought it was only on my computer since action isn't complaining.
Maybe it's linked and checking if directory exists before removing it would solve it

[Zenoo]

Oh, I just realized I forgot to add an option to the rm() method for it to be 100% compatible with the old one.
Fixing it now.

[lowlighter]

Thanks!