Update dependency friendsofphp/php-cs-fixer to v3

Author: renovate-bot

composer.json

@@ -26,7 +26,7 @@
         "phpunit/phpunit": "~4.8",
         "satooshi/php-coveralls": "~1.0",
         "squizlabs/php_codesniffer": "~2.6",
-        "friendsofphp/php-cs-fixer": "~1.12"
+        "friendsofphp/php-cs-fixer": "3.2.1"
     },
     "autoload": {
         "psr-4": {