fix Content-Length

Author: QuentinGab

pint.json

@@ -2,7 +2,6 @@
     "preset": "laravel",
     "rules": {
         "declare_strict_types": true,
-        "explicit_string_variable": true,
-        "mb_str_functions": true
+        "explicit_string_variable": true
     }
 }

src/Pdf/PdfInvoice.php

@@ -230,7 +230,7 @@ public function download(?string $filename = null): Response
         return new Response($output, 200, [
             'Content-Type' => 'application/pdf',
             'Content-Disposition' => HeaderUtils::makeDisposition('attachment', $filename, Str::ascii($filename)),
-            'Content-Length' => mb_strlen($output ?? ''),
+            'Content-Length' => strlen($output ?? ''),
         ]);
     }