fix: upgrade multiple dependencies with Snyk

Snyk has created this PR to upgrade:
  - @code-hike/mdx from 0.7.4 to 0.9.0.
    See this package in npm: https://www.npmjs.com/package/@code-hike/mdx
  - @docusaurus/core from 2.3.1 to 2.4.3.
    See this package in npm: https://www.npmjs.com/package/@docusaurus/core
  - @docusaurus/preset-classic from 2.3.1 to 2.4.3.
    See this package in npm: https://www.npmjs.com/package/@docusaurus/preset-classic
  - @emotion/react from 11.10.4 to 11.13.3.
    See this package in npm: https://www.npmjs.com/package/@emotion/react
  - @mdx-js/react from 2.1.3 to 2.3.0.
    See this package in npm: https://www.npmjs.com/package/@mdx-js/react
  - docusaurus-plugin-matomo from 0.0.6 to 0.0.8.
    See this package in npm: https://www.npmjs.com/package/docusaurus-plugin-matomo
  - docusaurus-plugin-sass from 0.2.2 to 0.2.5.
    See this package in npm: https://www.npmjs.com/package/docusaurus-plugin-sass
  - react-player from 2.10.1 to 2.16.0.
    See this package in npm: https://www.npmjs.com/package/react-player
  - redocusaurus from 1.3.0 to 1.6.4.
    See this package in npm: https://www.npmjs.com/package/redocusaurus
  - rehype-katex from 6.0.2 to 6.0.3.
    See this package in npm: https://www.npmjs.com/package/rehype-katex
  - sass from 1.54.9 to 1.77.8.
    See this package in npm: https://www.npmjs.com/package/sass

See this project in Snyk:
https://app.snyk.io/org/sammyfilly/project/9fce9ba0-c60e-42d7-9f98-290620d8b747?utm_source=github&utm_medium=referral&page=upgrade-pr