composer update

vendor/sebastian/environment/tests/OperatingSystemTest.php

@@ -1,4 +1,4 @@
-<?php
+<?php declare(strict_types=1);
 /*
  * This file is part of sebastian/environment.
  *
@@ -7,9 +7,6 @@
  * For the full copyright and license information, please view the LICENSE
  * file that was distributed with this source code.
  */
-
-declare(strict_types=1);
-
 namespace SebastianBergmann\Environment;
 
 use PHPUnit\Framework\TestCase;
@@ -24,7 +21,7 @@ final class OperatingSystemTest extends TestCase
      */
     private $os;
 
-    protected function setUp()/*: void*/
+    protected function setUp(): void
     {
         $this->os = new OperatingSystem;
     }
@@ -32,7 +29,7 @@ final class OperatingSystemTest extends TestCase
     /**
      * @requires OS Linux
      */
-    public function testFamilyCanBeRetrieved()/*: void*/
+    public function testFamilyCanBeRetrieved(): void
     {
         $this->assertEquals('Linux', $this->os->getFamily());
     }