Bump sphinx from 4.5.0 to 5.3.0

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 4.5.0 to 5.3.0.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES)
- [Commits](sphinx-doc/sphinx@v4.5.0...v5.3.0)

---
updated-dependencies:
- dependency-name: sphinx
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

poetry.lock

@@ -86,7 +86,7 @@ pytest = "^7"
 pytest-flake8 = "*"
 pytest-cov = "*"
 responses = "*"
-sphinx = "^4.0.2"
+sphinx = "^5.3.0"
 sphinx-rtd-theme = "^0.5.2"
 strict-rfc3339 = "^0.7"
 webob = "*"