Update version constraints for Laravel >5.0 <5.7.7

Author: mzur

composer.json

@@ -10,10 +10,10 @@
     ],
     "require": {
         "guzzlehttp/guzzle": "~6.0",
-        "illuminate/queue": "5.5.*",
-        "illuminate/support": "5.5.*",
-        "illuminate/contracts": "5.5.*",
-        "illuminate/routing": "5.5.*"
+        "illuminate/queue": "^5.5 <5.7.7",
+        "illuminate/support": "^5.5 <5.7.7",
+        "illuminate/contracts": "^5.5 <5.7.7",
+        "illuminate/routing": "^5.5 <5.7.7"
     },
     "autoload": {
         "psr-4": {
@@ -36,7 +36,7 @@
         }
     },
     "require-dev": {
-        "laravel/laravel": "5.5.*",
+        "laravel/laravel": "^5.5",
         "phpunit/phpunit": "^7.4",
         "mockery/mockery": "^1.2"
     }