tyle(session): use Session facade consistently in UserService

  Replace request()->session()->regenerate() with Session::regenerate()
  to match the pattern used throughout the rest of the project, and add
  the missing Session facade import.

Author: mulldug

app/Services/OpenId/UserService.php

@@ -34,6 +34,7 @@
 use Illuminate\Support\Facades\Config;
 use Illuminate\Support\Facades\Event;
 use Illuminate\Support\Facades\Log;
+use Illuminate\Support\Facades\Session;
 use Illuminate\Support\Facades\Mail;
 use Illuminate\Support\Facades\Storage;
 use models\exceptions\EntityNotFoundException;
@@ -382,7 +383,7 @@ public function update(int $id, array $payload): IEntity
         });
 
         if ($password_changed) {
-            request()->session()->regenerate();
+            Session::regenerate();
             Event::dispatch(new UserPasswordResetSuccessful($user->getId()));
         }