build(deps): bump next from 14.2.10 to 14.2.21 in /webgui-new

Bumps [next](https://github.com/vercel/next.js) from 14.2.10 to 14.2.21.
- [Release notes](https://github.com/vercel/next.js/releases)
- [Changelog](https://github.com/vercel/next.js/blob/canary/release.js)
- [Commits](vercel/next.js@v14.2.10...v14.2.21)

---
updated-dependencies:
- dependency-name: next
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

webgui-new/package-lock.json

@@ -41,7 +41,7 @@
     "dagre": "^0.8.5",
     "devicons-react": "^1.2.5",
     "i18next": "^23.2.8",
-    "next": "^14.2.10",
+    "next": "^14.2.21",
     "react": "^18.2.0",
     "react-diff-viewer-continued": "^3.2.6",
     "react-dom": "^18.2.0",