[11.x] Add PHP 8.4 with herd to passthrough variables (#53885)

Author: lucasmichot

src/Illuminate/Foundation/Console/ServeCommand.php

@@ -72,6 +72,7 @@ class ServeCommand extends Command
  'HERD_PHP_81_INI_SCAN_DIR',
  'HERD_PHP_82_INI_SCAN_DIR',
  'HERD_PHP_83_INI_SCAN_DIR',
+ 'HERD_PHP_84_INI_SCAN_DIR',
  'IGNITION_LOCAL_SITES_PATH',
  'LARAVEL_SAIL',
  'PATH',