fix: upgrade Next.js to 15.5.9 to patch critical RCE vulnerability (GHSA-9qr9-h5gf-34mp) [skip ci]

Author: subtleGradient

examples/nextjs-example/package.json

@@ -16,7 +16,7 @@
     "class-variance-authority": "^0.7.1",
     "clsx": "^2.1.1",
     "lucide-react": "^0.544.0",
-    "next": "15.5.4",
+    "next": "15.5.9",
     "react": "19.1.0",
     "react-dom": "19.1.0",
     "tailwind-merge": "^3.3.1",
@@ -29,7 +29,7 @@
     "@types/react": "^19",
     "@types/react-dom": "^19",
     "eslint": "^9",
-    "eslint-config-next": "15.5.4",
+    "eslint-config-next": "15.5.9",
     "tailwindcss": "^4",
     "tw-animate-css": "^1.4.0",
     "typescript": "^5"