Fix php-cs-fixer prefer lowest

Author: homersimpsons

composer.json

@@ -44,7 +44,7 @@
         "phpunit/phpunit": "^7.4.4 || ^8.0.0",
         "satooshi/php-coveralls": "^1.0.1",
         "wa72/simplelogger" : "^1.0",
-        "friendsofphp/php-cs-fixer": "^2.5",
+        "friendsofphp/php-cs-fixer": "^2.15.1",
         "symfony/process": "^3 || ^4",
         "thecodingmachine/tdbm-fluid-schema-builder": "^1.0.0",
         "phpstan/phpstan": "^0.11.5",