chore(deps): bump svgo, @docusaurus/core and @docusaurus/preset-classic

Bumps [svgo](https://github.com/svg/svgo) to 2.8.3 and updates ancestor dependencies [svgo](https://github.com/svg/svgo), [@docusaurus/core](https://github.com/facebook/docusaurus/tree/HEAD/packages/docusaurus) and [@docusaurus/preset-classic](https://github.com/facebook/docusaurus/tree/HEAD/packages/docusaurus-preset-classic). These dependencies need to be updated together.


Updates `svgo` from 2.4.0 to 2.8.3
- [Release notes](https://github.com/svg/svgo/releases)
- [Commits](svg/svgo@v2.4.0...v2.8.3)

Updates `@docusaurus/core` from 2.0.0-beta.4 to 2.4.3
- [Release notes](https://github.com/facebook/docusaurus/releases)
- [Changelog](https://github.com/facebook/docusaurus/blob/main/CHANGELOG-v2.md)
- [Commits](https://github.com/facebook/docusaurus/commits/v2.4.3/packages/docusaurus)

Updates `@docusaurus/preset-classic` from 2.0.0-beta.4 to 2.4.3
- [Release notes](https://github.com/facebook/docusaurus/releases)
- [Changelog](https://github.com/facebook/docusaurus/blob/main/CHANGELOG-v2.md)
- [Commits](https://github.com/facebook/docusaurus/commits/v2.4.3/packages/docusaurus-preset-classic)

---
updated-dependencies:
- dependency-name: svgo
  dependency-version: 2.8.3
  dependency-type: indirect
- dependency-name: "@docusaurus/core"
  dependency-version: 2.4.3
  dependency-type: direct:production
- dependency-name: "@docusaurus/preset-classic"
  dependency-version: 2.4.3
  dependency-type: direct:production
...

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Author: dependabot[bot]