build(deps-dev): bump furo from 2024.7.18 to 2024.8.6

Bumps [furo](https://github.com/pradyunsg/furo) from 2024.7.18 to 2024.8.6.
- [Release notes](https://github.com/pradyunsg/furo/releases)
- [Changelog](https://github.com/pradyunsg/furo/blob/main/docs/changelog.md)
- [Commits](pradyunsg/furo@2024.07.18...2024.08.06)

---
updated-dependencies:
- dependency-name: furo
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>