fix(deps): update nextjs monorepo to ^13.4.8

Author: renovate[bot]

docs/package.json

@@ -15,10 +15,10 @@
     "@md3-ui/utils": "^0.2.1",
     "@mdx-js/loader": "^2.3.0",
     "@mdx-js/react": "^2.3.0",
-    "@next/mdx": "^13.4.6",
+    "@next/mdx": "^13.4.8",
     "@preconstruct/next": "^4.0.0",
     "copy-to-clipboard": "^3.3.3",
-    "next": "^13.4.6",
+    "next": "^13.4.8",
     "next-seo": "^6.0.0",
     "prism-react-renderer": "^1.3.5",
     "react": "18.2.0",
@@ -35,6 +35,6 @@
   },
   "devDependencies": {
     "eslint": "^8.43.0",
-    "eslint-config-next": "^13.4.6"
+    "eslint-config-next": "^13.4.8"
   }
 }