Bump astro from 5.15.6 to 5.16.0 in /tutorials (#72)

Bumps [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro) from 5.15.6 to 5.16.0.
- [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/[email protected]/packages/astro)

---
updated-dependencies:
- dependency-name: astro
  dependency-version: 5.16.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

tutorials/package-lock.json

@@ -10,7 +10,7 @@
     "@astrojs/starlight": "^0.32.0",
     "@astrojs/starlight-markdoc": "^0.2.0",
     "adm-zip": "^0.5.16",
-    "astro": "^5.1.3",
+    "astro": "^5.16.0",
     "astro-relative-links": "^0.4.2",
     "sharp": "^0.33.0"
   }