Convert Input to Request facade

Laravel 5.2 no longer registers the `Input` facade by default. While
still available in Laravel 5, the `Input` facade is removed in
Laravel 6.

app/Http/Controllers/Common/ApiSettings.php

@@ -8,7 +8,7 @@ use App\Model\helpdesk\Ticket\Tickets;
 use DB;
 use Exception;
 use Illuminate\Http\Request;
-use Input;
+use Illuminate\Support\Facades\Request as Input;
 use Lang;
 use Log;