Bump astro from 6.4.4 to 7.1.6

Bumps [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro) from 6.4.4 to 7.1.6.
- [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@7.1.6/packages/astro)

---
updated-dependencies:
- dependency-name: astro
  dependency-version: 7.1.6
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

package.json

@@ -16,7 +16,7 @@
   "devDependencies": {
     "@astrojs/check": "0.9.10",
     "@astrojs/starlight": "^0.39.3",
-    "astro": "^6.4.4",
+    "astro": "^7.1.6",
     "sharp": "0.35.3",
     "typescript": "6.0.3"
   }