Upgrade to laravel 5.6.26

Upgrade phpunit-result-printer

composer.json

@@ -30,7 +30,7 @@
     },
     "require-dev": {
         "barryvdh/laravel-debugbar": "^3.0",
-        "codedungeon/phpunit-result-printer": "^0.6.0",
+        "codedungeon/phpunit-result-printer": "^0.19.10",
         "bvipul/generator": "^5.6",
         "filp/whoops": "~2.0",
         "fzaninotto/faker": "~1.4",