Upgrade dependencies for docs to resolve audit warnings

Author: seratch

docs/package.json

@@ -16,7 +16,7 @@
     "@openai/agents": "workspace:*",
     "@tailwindcss/vite": "^4.0.17",
     "astro": "^5.5.3",
-    "sharp": "^0.32.5",
+    "sharp": "^0.34.2",
     "starlight-llms-txt": "^0.5.0",
     "starlight-typedoc": "^0.21.0",
     "typedoc": "^0.28.1",