[Docs Site] Bump @astrojs/sitemap from 3.3.0 to 3.5.1

Bumps [@astrojs/sitemap](https://github.com/withastro/astro/tree/HEAD/packages/integrations/sitemap) from 3.3.0 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/[email protected]/packages/integrations/sitemap)

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

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

Author: dependabot[bot]

package-lock.json

@@ -31,7 +31,7 @@
 		"@astrojs/check": "0.9.4",
 		"@astrojs/react": "4.2.1",
 		"@astrojs/rss": "4.0.11",
-		"@astrojs/sitemap": "3.3.0",
+		"@astrojs/sitemap": "3.5.1",
 		"@astrojs/starlight": "0.32.3",
 		"@astrojs/starlight-docsearch": "0.6.0",
 		"@astrojs/starlight-tailwind": "3.0.0",