chore(deps): update remark (major)

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
remark-cli (source)	^11.0.0 -> ^12.0.0
remark-validate-links	^12.0.0 -> ^13.0.0

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Release Notes

remarkjs/remark (remark-cli)

### [`v12.0.0`](https://togithub.com/remarkjs/remark/releases/tag/remark-cli%4012.0.0) [Compare Source](https://togithub.com/remarkjs/remark/compare/remark-cli@11.0.0...remark-cli@12.0.0) (see [`15.0.0`](https://togithub.com/remarkjs/remark/releases/tag/15.0.0))

remarkjs/remark-validate-links (remark-validate-links)

### [`v13.0.0`](https://togithub.com/remarkjs/remark-validate-links/releases/tag/13.0.0) [Compare Source](https://togithub.com/remarkjs/remark-validate-links/compare/12.1.1...13.0.0) ##### Change - [`39c7e22`](https://togithub.com/remarkjs/remark-validate-links/commit/39c7e22) Change to require Node.js 16 **migrate**: update too - [`7c75796`](https://togithub.com/remarkjs/remark-validate-links/commit/7c75796) Change to use `exports` **migrate**: don’t use private APIs - [`c81c6ab`](https://togithub.com/remarkjs/remark-validate-links/commit/c81c6ab) Update `@types/mdast`, utilities, etc **migrate**: update too - [`323908a`](https://togithub.com/remarkjs/remark-validate-links/commit/323908a) [`7ac7d02`](https://togithub.com/remarkjs/remark-validate-links/commit/7ac7d02) Change to improve messages **migrate**: expect better messages **Full Changelog**: https://github.com/remarkjs/remark-validate-links/compare/12.1.1...13.0.0

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