composer(deps-dev): bump squizlabs/php_codesniffer from 3.13.3 to 3.13.4

Bumps [squizlabs/php_codesniffer](https://github.com/PHPCSStandards/PHP_CodeSniffer) from 3.13.3 to 3.13.4. - [Release notes](https://github.com/PHPCSStandards/PHP_CodeSniffer/releases) - [Changelog](https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/master/CHANGELOG.md) - [Commits](PHPCSStandards/PHP_CodeSniffer@3.13.3...3.13.4) --- updated-dependencies: - dependency-name: squizlabs/php_codesniffer dependency-version: 3.13.4 dependency-type: direct:development update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]