chore(deps): update devdependency @nuxt/test-utils to v3.21.0 (#200)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -31,7 +31,7 @@
     "@actions/core": "1.11.1",
     "@actions/http-client": "3.0.0",
     "@nuxt/eslint": "1.4.1",
-    "@nuxt/test-utils": "3.20.1",
+    "@nuxt/test-utils": "3.21.0",
     "@playwright/test": "1.52.0",
     "eslint": "9.39.1",
     "lint-staged": "16.1.0",