update kirby to v5 and add refresh cache panel view button

public/kirby/config/areas/users/views.php

@@ -2,6 +2,7 @@
 
 use Kirby\Cms\App;
 use Kirby\Cms\Find;
+use Kirby\Panel\Ui\Buttons\ViewButtons;
 use Kirby\Toolkit\Escape;
 
 return [
@@ -18,7 +19,11 @@ return [
 			return [
 				'component' => 'k-users-view',
 				'props'     => [
-					'canCreate' => $kirby->roles()->canBeCreated()->count() > 0,
+					'buttons' => fn () =>
+						ViewButtons::view('users')
+							->defaults('create')
+							->bind(['role' => $role])
+							->render(),
 					'role' => function () use ($roles, $role) {
 						if ($role) {
 							return $roles[$role] ?? null;