feat!: bump minimum node version to 14.18.0

[bluwy]

Description

Bump Vite to node >=14.18.0

Additional context

Mostly find + replace. Hopefully I didn't miss anything 😬

Ref #8309 (comment), that fs.rmSync requires node 14.14. node: protocols with require() requires `node 14.18.

Ref https://twitter.com/bluwyoo/status/1538224383507845120, a poll is made about whether users are mindful of the version change. And a majority leans on "any version works", followed by 14.18 being fine for them.

Thought I'd separate this change from #8309 so it's easier to review.

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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