[TASK] Update PHP-CS-Fixer

Author: oliverklee

.phive/phars.xml

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phive xmlns="https://phar.io/phive">
-  <phar name="php-cs-fixer" version="^3.50.0" installed="3.50.0" location="./.phive/php-cs-fixer" copy="false"/>
+  <phar name="php-cs-fixer" version="^3.59.3" installed="3.59.3" location="./.phive/php-cs-fixer" copy="false"/>
 </phive>

config/php-cs-fixer.php

@@ -21,6 +21,12 @@
             '@PHPUnit75Migration:risky' => true,
             '@PHPUnit84Migration:risky' => true,
 
+            // needed for PHP 7.x
+            'trailing_comma_in_multiline' => [
+                'after_heredoc' => true,
+                'elements' => ['arrays', 'match', 'parameters'],
+            ],
+
             'php_unit_construct' => true,
             'php_unit_dedicate_assert' => ['target' => 'newest'],
             'php_unit_expectation' => ['target' => 'newest'],