chore(deps): bump the npm-astro-dependencies group with 3 updates

Bumps the npm-astro-dependencies group with 3 updates: [@astrojs/rss](https://github.com/withastro/astro/tree/HEAD/packages/astro-rss), [@astrojs/sitemap](https://github.com/withastro/astro/tree/HEAD/packages/integrations/sitemap) and [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro).


Updates `@astrojs/rss` from 4.0.11 to 4.0.12
- [Release notes](https://github.com/withastro/astro/releases)
- [Changelog](https://github.com/withastro/astro/blob/main/packages/astro-rss/CHANGELOG.md)
- [Commits](https://github.com/withastro/astro/commits/@astrojs/rss@4.0.12/packages/astro-rss)

Updates `@astrojs/sitemap` from 3.4.0 to 3.4.1
- [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@3.4.1/packages/integrations/sitemap)

Updates `astro` from 5.8.1 to 5.9.1
- [Release notes](https://github.com/withastro/astro/releases)
- [Changelog](https://github.com/withastro/astro/blob/main/packages/astro/CHANGELOG.md)
- [Commits](https://github.com/withastro/astro/commits/astro@5.9.1/packages/astro)

---
updated-dependencies:
- dependency-name: "@astrojs/rss"
  dependency-version: 4.0.12
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: npm-astro-dependencies
- dependency-name: "@astrojs/sitemap"
  dependency-version: 3.4.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: npm-astro-dependencies
- dependency-name: astro
  dependency-version: 5.9.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: npm-astro-dependencies
...

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

Author: dependabot[bot]

package-lock.json

@@ -21,10 +21,10 @@
     "@astrojs/check": "^0.9.4",
     "@astrojs/mdx": "^4.3.0",
     "@astrojs/react": "^4.3.0",
-    "@astrojs/rss": "^4.0.11",
-    "@astrojs/sitemap": "^3.4.0",
+    "@astrojs/rss": "^4.0.12",
+    "@astrojs/sitemap": "^3.4.1",
     "@astrojs/tailwind": "^6.0.2",
-    "astro": "^5.8.1",
+    "astro": "^5.9.1",
     "astro-auto-import": "^0.4.2",
     "astro-font": "^1.1.0",
     "feather-icons-react": "^0.9.0",