chore(deps): bump astro from 5.15.6 to 5.15.9 (#33)

Bumps [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro) from 5.15.6 to 5.15.9.
- [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@5.15.9/packages/astro)

---
updated-dependencies:
- dependency-name: astro
  dependency-version: 5.15.9
  dependency-type: direct:production
...

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Author: dependabot[bot]

package-lock.json

@@ -21,7 +21,7 @@
     "prepare": "husky"
   },
   "dependencies": {
-    "astro": "^5.15.6"
+    "astro": "^5.15.9"
   },
   "devDependencies": {
     "eslint": "^9.32.0",