update deps

Author: prolic

composer.json

@@ -16,7 +16,7 @@
   ],
   "require": {
     "php": "^7.1",
-    "friendsofphp/php-cs-fixer": "^2.8.1"
+    "friendsofphp/php-cs-fixer": "^2.16.3"
   },
   "require-dev": {
     "phpunit/phpunit": "^6.0",