Bump friendsofphp/php-cs-fixer from 2.18.1 to 2.18.3

Bumps [friendsofphp/php-cs-fixer](https://github.com/FriendsOfPHP/PHP-CS-Fixer) from 2.18.1 to 2.18.3.
- [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@v2.18.1...v2.18.3)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]