[playground] Upgrade to latest nextjs

compiler/apps/playground/next.config.js

@@ -16,9 +16,6 @@ const nextConfig = {
 
     return config;
   },
-  experimental: {
-    appDir: true,
-  },
 };
 
 module.exports = nextConfig;

compiler/apps/playground/package.json

@@ -27,7 +27,7 @@
     "hermes-eslint": "^0.14.0",
     "invariant": "^2.2.4",
     "monaco-editor": "^0.34.1",
-    "next": "13.0.4",
+    "next": "^13.5.6",
     "notistack": "^3.0.0-alpha.7",
     "prettier": "^2.8.8",
     "pretty-format": "^29.3.1",
@@ -42,7 +42,7 @@
     "autoprefixer": "^10.4.13",
     "clsx": "^1.2.1",
     "eslint": "^8.28.0",
-    "eslint-config-next": "13.0.4",
+    "eslint-config-next": "^13.5.6",
     "postcss": "^8.4.19",
     "tailwindcss": "^3.2.4",
     "typescript": "^5.1.0"