Bump sphinx from 7.3.7 to 7.4.0

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 7.3.7 to 7.4.0.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v7.3.7...v7.4.0)

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

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

Author: dependabot[bot]

pyproject.toml

@@ -79,7 +79,7 @@ optional-dependencies.dev = [
     "pyyaml==6.0.1",
     "requests-mock-flask==2023.5.14",
     "ruff==0.5.1",
-    "sphinx==7.3.7",
+    "sphinx==7.4.0",
     "sphinx-paramlinks==0.6",
     "sphinx-prompt==1.8",
     "sphinx-substitution-extensions==2024.2.25",