Bump furo from 2022.2.23 to 2022.3.4 in /docs (#849)

Bumps [furo](https://github.com/pradyunsg/furo) from 2022.2.23 to 2022.3.4.
- [Release notes](https://github.com/pradyunsg/furo/releases)
- [Changelog](https://github.com/pradyunsg/furo/blob/main/docs/changelog.md)
- [Commits](pradyunsg/furo@2022.02.23...2022.03.04)

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

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

docs/requirements.txt

@@ -1,4 +1,4 @@
-furo==2022.2.23
+furo==2022.3.4
 sphinx==4.4.0
 sphinx-click==3.1.0
 myst_parser==0.17.0