build(deps-dev): bump astro from 2.3.2 to 2.9.6

Bumps [astro](https://github.com/withastro/astro/tree/HEAD/packages/astro) from 2.3.2 to 2.9.6.
- [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/[email protected]/packages/astro)

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

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

Author: dependabot[bot]

package.json

@@ -10,7 +10,7 @@
     "preview": "astro preview"
   },
   "devDependencies": {
-    "astro": "^2.3.2",
+    "astro": "^2.9.6",
     "globby": "^13.1.4",
     "mark.js": "^8.11.1",
     "sass": "^1.62.1",