Bump @astrojs/starlight from 0.25.5 to 0.26.1

Bumps [@astrojs/starlight](https://github.com/withastro/starlight/tree/HEAD/packages/starlight) from 0.25.5 to 0.26.1.
- [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]>

website/package.json

@@ -15,7 +15,7 @@
   },
   "dependencies": {
     "@astrojs/preact": "^3.5.1",
-    "@astrojs/starlight": "^0.25.1",
+    "@astrojs/starlight": "^0.26.1",
     "astro": "^4.12.2",
     "i18n-num-in-words": "workspace:*",
     "preact": "^10.22.1",