chore: update node engine version 18

[OzakIOne]

Breaking change

Docusaurus v3 drops support for Node 16 (end-of-life September 2023) and now requires Node.js >= 18.0

Motivation

Require Node.js >= 18

As discussed in the related issue, node 16 is EOL since 11 September 2023

Test Plan

CI

Test links

https://deploy-preview-9348--docusaurus-2.netlify.app/

Related issues/PRs

#7455 (comment)

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[slorber]

LGTM apart the examples modification that should be reverted.

CI will tell us if it works fine

[slorber]

Examples are generated with a script and are used to populate stackblitz/codesandbox templates.

They should represent the stable version of Docusaurus and shouldn't be updated manually.

These example changes should be reverted because examples are still using Docusaurus v2 (which supports Node 16.14)

They are basically new sites initialized with npx create-docusaurus@latest, so if you modify create-docusaurus these will be self-updated on next regeneration after a stable release. We don't have examples for unstable/next/alpha/beta/rc/canary versions.

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Build	Status	Details	Updated (UTC)
default (Inspect)	🧿 Changes detected (Review)	2 changes	Sep 28, 2023, 2:26 PM