Bump sphinx from 5.3.0 to 7.1.2

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 5.3.0 to 7.1.2.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES)
- [Commits](sphinx-doc/sphinx@v5.3.0...v7.1.2)

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

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

pyproject.toml

@@ -56,7 +56,7 @@ dev = [
   "setuptools",
   "wheel",
   "build",
-  "Sphinx==5.3.0",
+  "Sphinx==7.1.2",
   "furo==2023.3.27",
   "myst-parser==1.0.0",
   "sphinx-copybutton==0.5.2",