chore: complete update

src/Framework/DateTime/Exceptions/InvalidTimezoneException.php

@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Framework\DateTime\Exceptions;
+
+use Exception;
+
+class InvalidTimezoneException extends Exception
+{
+    public function __construct(string $timezone, ?\Throwable $previous = null)
+    {
+        parent::__construct(
+            sprintf('Ungültige Zeitzone: "%s"', $timezone),
+            0,
+            $previous
+        );
+    }
+}