Aktualisiere PHP-CS-Fixer auf v3.62.0 (#12)

Author: mpdude

.github/workflows/fix-cs-php.yml

@@ -17,7 +17,7 @@ jobs:
                     ref: ${{ github.head_ref }}
 
             -   name: Run PHP-CS-Fixer
-                uses: docker://oskarstark/php-cs-fixer-ga:3.11.0
+                uses: docker://ghcr.io/webfactory/php-cs-fixer:3.62.0
 
             -   name: Commit and push back changes
                 uses: stefanzweifel/git-auto-commit-action@v4

tests/NotModified/Attribute/ReplaceWithNotModifiedResponseTest.php

@@ -120,7 +120,7 @@ final class MyLastModifedDeterminator implements LastModifiedDeterminator
     /** @var DateTime */
     private $lastModified;
 
-    public function __construct(DateTime $lastModified = null)
+    public function __construct(?DateTime $lastModified = null)
     {
         $this->lastModified = $lastModified ?: DateTime::createFromFormat('U', time());
     }