fix(dependencies): update dependency remark-frontmatter to v4 - autoclosed

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
remark-frontmatter	^2.0.0 -> ^4.0.1

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Release Notes

remarkjs/remark-frontmatter (remark-frontmatter)

### [`v4.0.1`](https://togithub.com/remarkjs/remark-frontmatter/releases/tag/4.0.1) [Compare Source](https://togithub.com/remarkjs/remark-frontmatter/compare/4.0.0...4.0.1) - [`b56dae7`](https://togithub.com/remarkjs/remark-frontmatter/commit/b56dae7) Add improved docs by [@​wooorm](https://togithub.com/wooorm) in [https://github.com/remarkjs/remark-frontmatter/pull/17](https://togithub.com/remarkjs/remark-frontmatter/pull/17) **Full Changelog**: https://github.com/remarkjs/remark-frontmatter/compare/4.0.0...4.0.1 ### [`v4.0.0`](https://togithub.com/remarkjs/remark-frontmatter/releases/tag/4.0.0) [Compare Source](https://togithub.com/remarkjs/remark-frontmatter/compare/3.0.0...4.0.0) - [`c02f672`](https://togithub.com/remarkjs/remark-frontmatter/commit/c02f672) Use ESM ```js // From CommonJS var remarkFrontmatter = require('remark-frontmatter') // To ESM import remarkFrontmatter from 'remark-frontmatter' ``` Learn [more about ESM in this guide](https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c) - [`3f125a9`](https://togithub.com/remarkjs/remark-frontmatter/commit/3f125a9) Add JSDoc based types ### [`v3.0.0`](https://togithub.com/remarkjs/remark-frontmatter/releases/tag/3.0.0) [Compare Source](https://togithub.com/remarkjs/remark-frontmatter/compare/2.0.0...3.0.0) - [`fb1357b`](https://togithub.com/remarkjs/remark-frontmatter/commit/fb1357b) Update for [`micromark`](https://togithub.com/micromark/micromark) in [`remark@13`](https://togithub.com/remarkjs/remark/pull/536) (**breaking**, this update will not work for remark lower than v13, see commit for changes)

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