fix(deps): update dependency @astrojs/starlight to v0.40.0 (#43)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

docs-site/package-lock.json

@@ -9,7 +9,7 @@
   },
   "dependencies": {
     "@astrojs/check": "0.9.9",
-    "@astrojs/starlight": "0.39.3",
+    "@astrojs/starlight": "0.40.0",
     "astro": "6.4.5",
     "starlight-page-actions": "0.6.1",
     "typescript": "6.0.3"