Migrate Rails ujs as required for Rails 6 Upgrade. (#13280)

* Update yarn.lock

* Update package.json

* Update public.js

* Update admin.js

* Update log_out.js

* Update common.js

app/javascript/packs/admin.js

@@ -1,4 +1,4 @@
-import { delegate } from 'rails-ujs';
+import { delegate } from '@rails/ujs';
 import ready from '../mastodon/ready';
 
 const batchCheckboxClassName = '.batch-checkbox input[type="checkbox"]';