chore(deps): bump astro from 4.16.19 to 5.17.1 in /frontend/landing (#117)

Bumps [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro) from 4.16.19 to 5.17.1.
- [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@5.17.1/packages/astro)

---
updated-dependencies:
- dependency-name: astro
  dependency-version: 5.17.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

frontend/landing/package.json

@@ -8,6 +8,6 @@
     "preview": "astro preview"
   },
   "dependencies": {
-    "astro": "^4.16.0"
+    "astro": "^5.17.1"
   }
 }