chore(deps): bump shadcn from 4.21.4 to 4.23.0

Bumps [shadcn](https://github.com/shadcn-ui/ui/tree/HEAD/packages/shadcn) from 4.21.4 to 4.23.0.
- [Release notes](https://github.com/shadcn-ui/ui/releases)
- [Changelog](https://github.com/shadcn-ui/ui/blob/main/packages/shadcn/CHANGELOG.md)
- [Commits](https://github.com/shadcn-ui/ui/commits/shadcn@4.23.0/packages/shadcn)

---
updated-dependencies:
- dependency-name: shadcn
  dependency-version: 4.23.0
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

apps/dashboard/package.json

@@ -55,7 +55,7 @@
     "@types/react-dom": "^19.3.0",
     "@vitejs/plugin-react": "^6.1.2",
     "jsdom": "^30.0.1",
-    "shadcn": "^4.21.4",
+    "shadcn": "^4.23.0",
     "vite": "^8.3.4",
     "web-vitals": "^6.2.3"
   },