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:production
  update-type: version-update:semver-minor
...

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

pyproject.toml

@@ -58,7 +58,7 @@ dev = [
 # Docs are always built on a specific Python version; see RTD and tox config files,
 # and the docs contribution guide.
 docs = [
-    "furo == 2024.7.18",
+    "furo == 2024.8.6",
     "pyenchant == 3.2.2",
     "sphinx == 7.4.7",
     "sphinx_tabs == 3.4.5",