Bump @astrojs/starlight from 0.29.3 to 0.31.1

Bumps [@astrojs/starlight](https://github.com/withastro/starlight/tree/HEAD/packages/starlight) from 0.29.3 to 0.31.1.
- [Release notes](https://github.com/withastro/starlight/releases)
- [Changelog](https://github.com/withastro/starlight/blob/main/packages/starlight/CHANGELOG.md)
- [Commits](https://github.com/withastro/starlight/commits/@astrojs/[email protected]/packages/starlight)

---
updated-dependencies:
- dependency-name: "@astrojs/starlight"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

package.json

@@ -13,7 +13,7 @@
   "dependencies": {
     "@astrojs/check": "^0.9.4",
     "@astrojs/sitemap": "^3.2.1",
-    "@astrojs/starlight": "^0.29.2",
+    "@astrojs/starlight": "^0.31.1",
     "@astrojs/tailwind": "^5.1.2",
     "@astrojs/vue": "^4.5.3",
     "@vitejs/plugin-vue": "^5.0.4",