chore: bump @progress/kendo-theme-default

Bumps the kendo-dependencies group in /examples/kendo-react-nextjs with 1 update: [@progress/kendo-theme-default](https://github.com/telerik/kendo-themes/tree/HEAD/packages/default).


Updates `@progress/kendo-theme-default` from 11.3.2 to 12.0.0
- [Release notes](https://github.com/telerik/kendo-themes/releases)
- [Changelog](https://github.com/telerik/kendo-themes/blob/develop/packages/default/CHANGELOG.md)
- [Commits](https://github.com/telerik/kendo-themes/commits/v12.0.0/packages/default)

---
updated-dependencies:
- dependency-name: "@progress/kendo-theme-default"
  dependency-version: 12.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: kendo-dependencies
...

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

Author: dependabot[bot]

examples/kendo-react-nextjs/package.json

@@ -23,7 +23,7 @@
     "@progress/kendo-react-popup": "^11.0.0",
     "@progress/kendo-react-treeview": "^11.0.0",
     "@progress/kendo-svg-icons": "^4.3.0",
-    "@progress/kendo-theme-default": "^11.0.2",
+    "@progress/kendo-theme-default": "^12.0.0",
     "next": "^14.2.25",
     "react": "latest",
     "react-dom": "latest"