Update friendsofphp/php-cs-fixer requirement from 2.18.3 to 2.18.4

Updates the requirements on [friendsofphp/php-cs-fixer](https://github.com/FriendsOfPHP/PHP-CS-Fixer) to permit the latest version.
- [Release notes](https://github.com/FriendsOfPHP/PHP-CS-Fixer/releases)
- [Changelog](https://github.com/FriendsOfPHP/PHP-CS-Fixer/blob/2.18/CHANGELOG.md)
- [Commits](PHP-CS-Fixer/PHP-CS-Fixer@v2.18.3...v2.18.4)

Signed-off-by: dependabot[bot] <support@github.com>

composer.json

@@ -29,7 +29,7 @@
         "phpunit/phpunit": "^8.5.14 || ^9.0.0",
         "phpstan/phpstan": "0.12.82",
         "diablomedia/zendframework1-view-helper-layout": "^1.0",
-        "friendsofphp/php-cs-fixer": "2.18.3",
+        "friendsofphp/php-cs-fixer": "2.18.4",
         "maglnet/composer-require-checker": "^1.1.0 || ^2.0.0 || ^3.0.0",
         "phpro/grumphp-shim": "^0.22.0 || ^1.1"
     },