Laravel 9 Update (#1413)

Update to Laravel 9 and PHP 8+

Co-authored-by: B.Fatih KOZ <fatih.koz@gmail.com>

app/Http/Resources/BidSubfleet.php

@@ -2,6 +2,9 @@
 
 namespace App\Http\Resources;
 
+/**
+ * @mixin \App\Models\Subfleet
+ */
 class BidSubfleet extends Subfleet
 {
     protected $aircraft;