Updated Laravel dependencies to support v5.6

Author: AlexMordred

composer.json

@@ -11,8 +11,8 @@
     ],
     "require": {
         "php": ">=7.0",
-        "illuminate/support": "5.4.* || 5.5.*",
-        "illuminate/http": "5.4.* || 5.5.*",
+        "illuminate/support": "5.4.* || 5.5.* || 5.6.*",
+        "illuminate/http": "5.4.* || 5.5.* || 5.6.*",
         "intervention/image": "^2.4"
     },
     "require-dev": {