fix: templates/library/nextjs-library-boilerplate/example/package.jso…

…n to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-NEXT-8186172

templates/library/nextjs-library-boilerplate/example/package.json

@@ -11,7 +11,7 @@
     "dependencies": {
         "eslint": "8.34.0",
         "eslint-config-next": "13.2.1",
-        "next": "13.2.1",
+        "next": "14.2.7",
         "next-library": "link:..",
         "react": "18.2.0",
         "react-dom": "18.2.0"