Build(deps): Bump @astrojs/sitemap from 3.4.2 to 3.5.1

Bumps [@astrojs/sitemap](https://github.com/withastro/astro/tree/HEAD/packages/integrations/sitemap) from 3.4.2 to 3.5.1.
- [Release notes](https://github.com/withastro/astro/releases)
- [Changelog](https://github.com/withastro/astro/blob/main/packages/integrations/sitemap/CHANGELOG.md)
- [Commits](https://github.com/withastro/astro/commits/@astrojs/sitemap@3.5.1/packages/integrations/sitemap)

---
updated-dependencies:
- dependency-name: "@astrojs/sitemap"
  dependency-version: 3.5.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package-lock.json

@@ -11,7 +11,7 @@
     "astro": "astro"
   },
   "dependencies": {
-    "@astrojs/sitemap": "^3.4.2",
+    "@astrojs/sitemap": "^3.5.1",
     "@astrojs/tailwind": "^5.1.5",
     "astro": "^5.12.8",
     "sass": "^1.89.2",