Install dev-master of the phpcodesniffer-composer-installer for now.

Author: frenck

composer.json

@@ -25,7 +25,7 @@
   "require": {
     "php": ">=5.6,<8.0-dev",
 
-    "dealerdirect/phpcodesniffer-composer-installer": "@dev",
+    "dealerdirect/phpcodesniffer-composer-installer": "dev-master",
     "hirak/prestissimo": "^0.3",
 
     "behat/behat": "^3.1.0",