chore(deps): bump loader-utils and @mdx-js/loader

Bumps [loader-utils](https://github.com/webpack/loader-utils) to 2.0.4 and updates ancestor dependency [@mdx-js/loader](https://github.com/mdx-js/mdx/tree/HEAD/packages/loader). These dependencies need to be updated together.


Updates `loader-utils` from 2.0.0 to 2.0.4
- [Release notes](https://github.com/webpack/loader-utils/releases)
- [Changelog](https://github.com/webpack/loader-utils/blob/v2.0.4/CHANGELOG.md)
- [Commits](webpack/loader-utils@v2.0.0...v2.0.4)

Updates `@mdx-js/loader` from 1.6.22 to 3.1.1
- [Release notes](https://github.com/mdx-js/mdx/releases)
- [Changelog](https://github.com/mdx-js/mdx/blob/main/changelog.md)
- [Commits](https://github.com/mdx-js/mdx/commits/3.1.1/packages/loader)

---
updated-dependencies:
- dependency-name: loader-utils
  dependency-version: 2.0.4
  dependency-type: indirect
- dependency-name: "@mdx-js/loader"
  dependency-version: 3.1.1
  dependency-type: direct:development
...

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Author: dependabot[bot]