composer update

vendor/symfony/console/Output/ConsoleOutput.php

@@ -41,6 +41,13 @@ class ConsoleOutput extends StreamOutput implements ConsoleOutputInterface
     {
         parent::__construct($this->openOutputStream(), $verbosity, $decorated, $formatter);
 
+        if (null === $formatter) {
+            // for BC reasons, stdErr has it own Formatter only when user don't inject a specific formatter.
+            $this->stderr = new StreamOutput($this->openErrorStream(), $verbosity, $decorated);
+
+            return;
+        }
+
         $actualDecorated = $this->isDecorated();
         $this->stderr = new StreamOutput($this->openErrorStream(), $verbosity, $decorated, $this->getFormatter());
 
@@ -131,7 +138,7 @@ class ConsoleOutput extends StreamOutput implements ConsoleOutputInterface
         $checks = [
             \function_exists('php_uname') ? php_uname('s') : '',
             getenv('OSTYPE'),
-            PHP_OS,
+            \PHP_OS,
         ];
 
         return false !== stripos(implode(';', $checks), 'OS400');