⬆️ Bump axios and @staart/site (#907)

Bumps [axios](https://github.com/axios/axios) to 0.21.4 and updates ancestor dependency [@staart/site](https://github.com/staart/site). These dependencies need to be updated together.


Updates `axios` from 0.19.2 to 0.21.4
- [Release notes](https://github.com/axios/axios/releases)
- [Changelog](https://github.com/axios/axios/blob/v0.21.4/CHANGELOG.md)
- [Commits](axios/axios@v0.19.2...v0.21.4)

Updates `@staart/site` from 2.4.0 to 3.0.0-beta.20
- [Release notes](https://github.com/staart/site/releases)
- [Changelog](https://github.com/staart/site/blob/master/CHANGELOG.md)
- [Commits](https://github.com/staart/site/commits)

---
updated-dependencies:
- dependency-name: axios
  dependency-type: indirect
- dependency-name: "@staart/site"
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Jarco van Roest <jarco@elnino.tech>