[TASK] Update PHP-CS-Fixer (#493)

https://github.com/PHP-CS-Fixer/PHP-CS-Fixer/releases/tag/v3.50.0

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="^3.49.0" installed="3.49.0" location="./.phive/php-cs-fixer" copy="false"/>
+  <phar name="php-cs-fixer" version="^3.50.0" installed="3.50.0" location="./.phive/php-cs-fixer" copy="false"/>
 </phive>