change composer.json let 5.7 work

Author: FreedomKnight

composer.json

@@ -23,9 +23,9 @@
     ],
     "require": {
         "php": "^7.0",
-        "illuminate/config": "~5.5.0 || ~5.6.0",
-        "illuminate/database": "~5.5.0 || ~5.6.0",
-        "illuminate/support": "~5.5.0 || ~5.6.0",
+        "illuminate/config": ">5.5.0",
+        "illuminate/database": ">5.5.0",
+        "illuminate/support": ">5.5.0",
         "kalnoy/nestedset": "^4.3"
     },
     "require-dev": {