fix: upgrade @astrojs/starlight from 0.30.6 to 0.31.0 (#517)

Snyk has created this PR to upgrade @astrojs/starlight from 0.30.6 to 0.31.0.

See this package in yarn:
@astrojs/starlight

See this project in Snyk:
https://app.snyk.io/org/data-team-dt/project/ee034aa7-b6ce-4de5-8d0b-dfccab2c739c?utm_source=github&utm_medium=referral&page=upgrade-pr

Co-authored-by: snyk-bot <[email protected]>

Author: Contentsquare-Security-Bot

docs/package.json

@@ -11,7 +11,7 @@
     "astro": "astro"
   },
   "dependencies": {
-    "@astrojs/starlight": "^0.30.3",
+    "@astrojs/starlight": "^0.31.0",
     "astro": "^5.1.8",
     "sharp": "^0.33.5"
   },