chore(deps-dev): bump @utrecht/breadcrumb-nav-css from 1.5.0 to 2.1.0

Bumps [@utrecht/breadcrumb-nav-css](https://github.com/nl-design-system/utrecht/tree/HEAD/components/breadcrumb-nav) from 1.5.0 to 2.1.0.
- [Release notes](https://github.com/nl-design-system/utrecht/releases)
- [Changelog](https://github.com/nl-design-system/utrecht/blob/main/components/breadcrumb-nav/CHANGELOG.md)
- [Commits](https://github.com/nl-design-system/utrecht/commits/@utrecht/breadcrumb-nav-css@2.1.0/components/breadcrumb-nav)

---
updated-dependencies:
- dependency-name: "@utrecht/breadcrumb-nav-css"
  dependency-version: 2.1.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

packages/website/package.json

@@ -75,7 +75,7 @@
     "@types/react": "19.2.10",
     "@types/react-dom": "19.2.3",
     "@utrecht/body-css": "1.2.1",
-    "@utrecht/breadcrumb-nav-css": "1.5.1",
+    "@utrecht/breadcrumb-nav-css": "2.1.0",
     "@utrecht/root-css": "1.2.1",
     "algoliasearch": "5.47.0",
     "astro": "5.16.15",