maint: bump sphinx from 7.2.6 to 7.3.7

Bumps [sphinx](https://github.com/sphinx-doc/sphinx) from 7.2.6 to 7.3.7.
- [Release notes](https://github.com/sphinx-doc/sphinx/releases)
- [Changelog](https://github.com/sphinx-doc/sphinx/blob/master/CHANGES.rst)
- [Commits](sphinx-doc/sphinx@v7.2.6...v7.3.7)

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

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

pyproject.toml

@@ -45,7 +45,7 @@ doc = [
     "ansys-api-platform-instancemanagement==1.0.0",
     "ansys-sphinx-theme==0.13.4",
     "numpydoc==1.7.0",
-    "Sphinx==7.2.6",
+    "Sphinx==7.3.7",
     "sphinx-copybutton==0.5.2",
 ]