Bump furo from 2023.3.27 to 2023.9.10

Bumps [furo](https://github.com/pradyunsg/furo) from 2023.3.27 to 2023.9.10.
- [Release notes](https://github.com/pradyunsg/furo/releases)
- [Changelog](https://github.com/pradyunsg/furo/blob/main/docs/changelog.md)
- [Commits](pradyunsg/furo@2023.03.27...2023.09.10)

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

Signed-off-by: dependabot[bot] <[email protected]>

pyproject.toml

@@ -31,7 +31,7 @@ dns_exporter = "dns_exporter.entrypoint:main"
 [project.optional-dependencies]
 dev = ["twine == 4.0.2", "pre-commit == 3.3.3", "setuptools-scm == 7.1.0", "build==1.0.3"]
 test = ["pytest == 7.4.4", "pytest-cov==4.0.0", "tox == 4.12.1", "requests==2.28.2"]
-docs = ["Sphinx==7.0.1", "furo==2023.3.27"]
+docs = ["Sphinx==7.0.1", "furo==2023.9.10"]
 
 [project.urls]
 homepage = "https://github.com/tykling/dns_exporter"