bump @nextcloud/vue from 8.19.0 to 8.20.0

---
updated-dependencies:
- dependency-name: "@nextcloud/vue"
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

package.json

@@ -33,7 +33,7 @@
     "@nextcloud/logger": "^2.7.0",
     "@nextcloud/moment": "^1.3.1",
     "@nextcloud/router": "^3.0.1",
-    "@nextcloud/vue": "^8.19.0",
+    "@nextcloud/vue": "^8.20.0",
     "vue": "^2.7.16",
     "vue-material-design-icons": "^5.3.1"
   },