Merge pull request #7445 from magento-atwix-pyrrans/AC-2259-update-phpcs-fixer

[Pyrrans] AC-2259: Update php-cs-fixer to 3.4.x

Author: sivaschenko

composer.json

@@ -88,7 +88,7 @@
     "require-dev": {
         "allure-framework/allure-phpunit": "~1.5.0",
         "dealerdirect/phpcodesniffer-composer-installer": "^0.7.0",
-        "friendsofphp/php-cs-fixer": "~3.3.0",
+        "friendsofphp/php-cs-fixer": "~3.4.0",
         "lusitanian/oauth": "~0.8.10",
         "magento/magento-coding-standard": "*",
         "magento/magento2-functional-testing-framework": "^3.7",