fix: workspace-service/templates/nextjs/package.json & workspace-service/templates/nextjs/package-lock.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-NEXT-10176058

Author: snyk-bot

workspace-service/templates/nextjs/package-lock.json

@@ -11,7 +11,7 @@
   "dependencies": {
     "react": "^18",
     "react-dom": "^18",
-    "next": "14.2.4"
+    "next": "14.2.24"
   },
   "devDependencies": {
     "typescript": "^5",