Bump sphinx-sitemap from 2.7.2 to 2.9.0

Bumps [sphinx-sitemap](https://github.com/jdillard/sphinx-sitemap) from 2.7.2 to 2.9.0.
- [Release notes](https://github.com/jdillard/sphinx-sitemap/releases)
- [Changelog](https://github.com/jdillard/sphinx-sitemap/blob/master/CHANGELOG.rst)
- [Commits](jdillard/sphinx-sitemap@v2.7.2...v2.9.0)

---
updated-dependencies:
- dependency-name: sphinx-sitemap
  dependency-version: 2.9.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

pyproject.toml

@@ -16,7 +16,7 @@ dependencies = [
     "sphinx==7.2.6",
     "sphinx-copybutton==0.5.2",
     "sphinx-design==0.5.0",
-    "sphinx-sitemap==2.7.2",
+    "sphinx-sitemap==2.9.0",
     "sphinx-tabs==3.4.5",
     "sphinx-togglebutton==0.3.2",
     "sphinxcontrib-youtube==1.4.1",