fix: next/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-NEXT-8602067

Author: snyk-bot

next/package.json

@@ -25,7 +25,7 @@
     "gonzales-pe": "^4.3.0",
     "lodash-es": "^4.17.21",
     "mousetrap": "^1.6.5",
-    "next": "13.1.1",
+    "next": "13.5.8",
     "prism-react-renderer": "^1.3.5",
     "react": "18.2.0",
     "react-copy-to-clipboard": "^5.1.0",