Bump sphinx from 7.2.5 to 7.2.6

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 7.2.5 to 7.2.6.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v7.2.5...v7.2.6)

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

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

pyproject.toml

@@ -36,7 +36,7 @@ tests = [
 doc = [
     "ansys-sphinx-theme==0.11.1",
     "numpydoc==1.5.0",
-    "Sphinx==7.2.5",
+    "Sphinx==7.2.6",
     "sphinx-copybutton==0.5.2",
 ]