chore(deps): update dependency vue-router to v5

Author: renovate[bot]

packages/web-app-external-sites/package.json

@@ -14,7 +14,7 @@
     "@ownclouders/extension-sdk": "^12.2.0",
     "@ownclouders/web-test-helpers": "^12.2.0",
     "vue": "^3.4.21",
-    "vue-router": "^4.2.5",
+    "vue-router": "^5.0.0",
     "vue3-gettext": "^2.4.0",
     "zod": "^4.0.0"
   },