Update remark to v8 (major)

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
remark-autolink-headings	^6.1.0 -> ^8.0.0
remark-highlight.js	^6 -> ^8.0.0

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Release Notes

remarkjs/remark-autolink-headings (remark-autolink-headings)

### [`v8.0.0`](https://redirect.github.com/remarkjs/remark-autolink-headings/releases/tag/8.0.0) [Compare Source](https://redirect.github.com/remarkjs/remark-autolink-headings/compare/7.0.1...8.0.0) Deprecated 🪦 **Full Changelog**: https://github.com/remarkjs/remark-autolink-headings/compare/7.0.1...8.0.0 ### [`v7.0.1`](https://redirect.github.com/remarkjs/remark-autolink-headings/releases/tag/7.0.1) [Compare Source](https://redirect.github.com/remarkjs/remark-autolink-headings/compare/7.0.0...7.0.1) - [`000ab47`](https://redirect.github.com/remarkjs/remark-autolink-headings/commit/000ab47) Mark `remark-autolink-headings` as legacy please use `rehype-autolink-headings` instead ### [`v7.0.0`](https://redirect.github.com/remarkjs/remark-autolink-headings/releases/tag/7.0.0) [Compare Source](https://redirect.github.com/remarkjs/remark-autolink-headings/compare/6.1.0...7.0.0) - [`42a3337`](https://redirect.github.com/remarkjs/remark-autolink-headings/commit/42a3337) Use ESM ```js // From CommonJS var remarkAutolinkHeadings = require('remark-autolink-headings') // To ESM import remarkAutolinkHeadings from 'remark-autolink-headings' ``` Learn [more about ESM in this guide](https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c) - [`5d897b7`](https://redirect.github.com/remarkjs/remark-autolink-headings/commit/5d897b7) Add JSDoc based types - [`3222024`](https://redirect.github.com/remarkjs/remark-autolink-headings/commit/3222024) Remove support for deprecated `behaviour`

remarkjs/remark-highlight.js (remark-highlight.js)

### [`v8.0.0`](https://redirect.github.com/remarkjs/remark-highlight.js/releases/tag/8.0.0) [Compare Source](https://redirect.github.com/remarkjs/remark-highlight.js/compare/7.0.1...8.0.0) Deprecated 🪦 **Full Changelog**: https://github.com/remarkjs/remark-highlight.js/compare/7.0.1...8.0.0 ### [`v7.0.1`](https://redirect.github.com/remarkjs/remark-highlight.js/releases/tag/7.0.1) [Compare Source](https://redirect.github.com/remarkjs/remark-highlight.js/compare/7.0.0...7.0.1) - [`5a7350a`](https://redirect.github.com/remarkjs/remark-highlight.js/commit/5a7350a) Mark `remark-highlight.js` as legacy please use `rehype-highlight` instead ### [`v7.0.0`](https://redirect.github.com/remarkjs/remark-highlight.js/releases/tag/7.0.0) [Compare Source](https://redirect.github.com/remarkjs/remark-highlight.js/compare/6.0.0...7.0.0) - [`25c136d`](https://redirect.github.com/remarkjs/remark-highlight.js/commit/25c136d) Use ESM ```js // From CommonJS var remarkHighlightjs = require('remark-highlight.js') // To ESM import remarkHighlightjs from 'remark-highlight.js' ``` Learn [more about ESM in this guide](https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c) - [`304336e`](https://redirect.github.com/remarkjs/remark-highlight.js/commit/304336e) Add JSDoc based types - [`389b817`](https://redirect.github.com/remarkjs/remark-highlight.js/commit/389b817) [`7ad2c8c`](https://redirect.github.com/remarkjs/remark-highlight.js/commit/7ad2c8c) Update `lowlight`

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