Bump astro from 5.9.2 to 5.13.1

Bumps [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro) from 5.9.2 to 5.13.1.
- [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/[email protected]/packages/astro)

---
updated-dependencies:
- dependency-name: astro
  dependency-version: 5.13.1
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -8,7 +8,7 @@
   "type": "module",
   "devDependencies": {
     "@shikijs/colorized-brackets": "^3.2.2",
-    "astro": "^5.9.2",
+    "astro": "^5.13.1",
     "eslint": "^9.28.0",
     "eslint-config-prettier": "^10.1.2",
     "front-matter": "^4.0.2",