Update composer.json

Author: vyuldashev

composer.json

@@ -9,17 +9,17 @@
     }
   ],
   "require": {
-    "php": ">=7.0",
+    "php": "^7.1.3",
     "illuminate/database": "5.6.*",
     "illuminate/support": "5.6.*",
     "illuminate/queue": "5.6.*",
     "enqueue/amqp-lib": "0.8.*",
     "queue-interop/amqp-interop": "^0.7"
   },
   "require-dev": {
-    "phpunit/phpunit": "~7.0",
+    "phpunit/phpunit": "^7.0",
     "illuminate/events": "5.6.*",
-    "mockery/mockery": "~1.0"
+    "mockery/mockery": "^1.0"
   },
   "autoload": {
     "psr-4": {