Bump astro from 5.2.4 to 5.12.9 (#3249)

Bumps [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro) from 5.2.4 to 5.12.9.
- [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/[email protected]/packages/astro)

---
updated-dependencies:
- dependency-name: astro
  dependency-version: 5.12.9
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

docs-src/package.json

@@ -14,7 +14,7 @@
     "@astrojs/check": "^0.9.4",
     "@astrojs/starlight": "^0.31.1",
     "@astrojs/tailwind": "^6.0.2",
-    "astro": "^5.2.4",
+    "astro": "^5.12.9",
     "sharp": "^0.34.3",
     "shepherd.js": "workspace:*",
     "starlight-typedoc": "^0.18.0",

landing/package.json

@@ -18,7 +18,7 @@
     "@astrojs/tailwind": "^6.0.2",
     "@astrojs/vercel": "^8.2.3",
     "@polar-sh/sdk": "^0.20.2",
-    "astro": "^5.2.4",
+    "astro": "^5.12.9",
     "shepherd.js": "workspace:*",
     "tailwindcss": "^3.4.17",
     "typescript": "^5.7.3"