fix:更新已知bug,优化代码

vendor/symfony/console/Helper/Dumper.php

@@ -24,7 +24,7 @@ final class Dumper
     private $output;
     private $dumper;
     private $cloner;
-    private $handler;
+    private \Closure $handler;
 
     public function __construct(OutputInterface $output, CliDumper $dumper = null, ClonerInterface $cloner = null)
     {
@@ -57,7 +57,7 @@ final class Dumper
         }
     }
 
-    public function __invoke($var): string
+    public function __invoke(mixed $var): string
     {
         return ($this->handler)($var);
     }