Update Collision

composer.json

@@ -14,7 +14,7 @@
         "filp/whoops": "~2.0",
         "fzaninotto/faker": "~1.4",
         "mockery/mockery": "~1.0",
-        "nunomaduro/collision": "~1.1",
+        "nunomaduro/collision": "~2.0",
         "phpunit/phpunit": "~7.0",
         "symfony/thanks": "^1.0"
     },