build(deps): bump sphinx from 7.1.2 to 7.2.5

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 7.1.2 to 7.2.5.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES)
- [Commits](sphinx-doc/sphinx@v7.1.2...v7.2.5)

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

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

docs/requirements.txt

@@ -3,5 +3,5 @@ furo==2023.7.26
 m2r2==0.3.3.post2
 rstcheck[sphinx]==6.1.2
 rstfmt==0.0.14
-Sphinx==7.1.2
+Sphinx==7.2.5
 sphinx-copybutton==0.5.2