Upgrade Node.js, npm, and lockfile-version used for development

[ericcornelissen]

Engineering Initiative

• Branch: main (v3)

Description

Upgrade the version of Node.js used during development to 18 (from 16, see .nvmrc). Relatedly, upgrade to npm 8¹ (from 7, see package.json) and the lockfile-version to 3¹ (from 2, see .npmrc and package-lock.json).

Footnotes

1. Or newer, if there's a newer stable version. ↩ ↩²

[ericcornelissen]

The Node.js version upgrade to v18 was reverted in #569, for updates on that topic follow #572