update composer

Author: taylorotwell

Diff for: composer.json

@@ -11,9 +11,9 @@
     ],
     "require": {
         "php": "^7.1.3",
-        "illuminate/console": "~5.8|^6.0|^7.0",
-        "illuminate/filesystem": "~5.8|^6.0|^7.0",
-        "illuminate/support": "~5.8|^6.0|^7.0"
+        "illuminate/console": "~5.8|^6.0",
+        "illuminate/filesystem": "~5.8|^6.0",
+        "illuminate/support": "~5.8|^6.0"
     },
     "require-dev": {
         "mockery/mockery": "^1.0",
@@ -34,7 +34,7 @@
     },
     "extra": {
         "branch-alias": {
-            "dev-master": "1.x-dev"
+            "dev-master": "2.x-dev"
         },
         "laravel": {
             "providers": [