Fix code style

[EmilMassey]

Currently CI checks fail due to code style issues being reported by the latest version of CS fixer. This PR fixes these issues and also changes configuration for trailing_comma_in_multiline fixer not to add comma after parameters, because it's not allowed in PHP 7.

[AlessandroMinoccheri]

Hi @EmilMassey is it possible to fix pipelines?

[EmilMassey]

Hi @AlessandroMinoccheri Does it make sense to run coding standard checks for PHP < 8.0? I added condition to skip this step in the pipelines, because the problem is that depending on PHP version, another CS Fixer version is installed and the configurations for both of them differ. Alternatively we could define different configuration options depending on the PHP version.

Also there's unrelated job failed for PHP 7.1 due to roave/security-advisories disallowing installation of vulnerable version of symfony/process: https://symfony.com/blog/cve-2024-51736-command-execution-hijack-on-windows-with-process-class. It seems update is not available for PHP 7.1, so maybe support for PHP 7.1 should be dropped altogether?