fix: Adapt to constructor change of TrashItem in files_trashbin

Ideally we should store the information of who deleted the item and pass
 it, but for now just pass null to avoid a crash.

Signed-off-by: Côme Chilliet <come.chilliet@nextcloud.com>

lib/Trash/GroupTrashItem.php

@@ -39,7 +39,7 @@ public function __construct(
 		IUser $user,
 		string $mountPoint
 	) {
-		parent::__construct($backend, $originalLocation, $deletedTime, $trashPath, $fileInfo, $user);
+		parent::__construct($backend, $originalLocation, $deletedTime, $trashPath, $fileInfo, $user, null);
 		$this->mountPoint = $mountPoint;
 	}