chore(deps): update dependency astro to v6 [security]

Author: renovate[bot]

docs/website/package.json

@@ -14,7 +14,7 @@
   },
   "dependencies": {
     "@astrojs/starlight": "^0.37.6",
-    "astro": "^5.17.2",
+    "astro": "^6.0.0",
     "sharp": "^0.33.5"
   },
   "devDependencies": {