NPM 9 released, check lerna for compatibility, adjust test suite

[MirKml]

Description

NPM 9 was released. It will be new LTS in december 2022.
It will be also bundled as default npm version for 18+ node.js - current LTS. See the blog post for timeline schedule.
Nothing much changed from lerna perspective between npm 8, 9.

It's time to prepare test suite for checking if e2e or other tests works fine on node 18+ and npm 9.* I think.

Motivation

Lerna compatibility with latest NPM is important for many lerna users.

[MirKml]

NPM 9 is part of LTS node - 18.14.0+
My worked configuration - node 18.14.2 with bundled npm 9.5.0, lerna 5.6.2 with lockfile v2 - old one.
I don't test current lerna 6.2.x, but it seems there are some issues with npm lockfile v3 - see #3455.
You can set lockfile version via npm cli flag or config --lockfile-version, see https://docs.npmjs.com/cli/v9/using-npm/config#lockfile-version.

[JamesHenry]

Hi Folks, I'm going to close this one as Node 18 and NPM 9 are already the primary versions used on the lerna repo.