bump to laravel 8

Author: adlerdias

composer.json

@@ -14,11 +14,11 @@
     }
   ],
   "require": {
-    "php": ">=7.1.0",
-    "illuminate/contracts": "~5.6|~6.0|~7.0",
-    "illuminate/queue": "~5.6|~6.0|~7.0",
-    "illuminate/support": "~5.6|~6.0|~7.0",
-    "guzzlehttp/guzzle": "^6.3",
+    "php": "^7.2.5",
+    "illuminate/contracts": "~7.0|~8.0",
+    "illuminate/queue": "~7.0|~8.0",
+    "illuminate/support": "~7.0|~8.0",
+    "guzzlehttp/guzzle": "^7.0.1",
     "monolog/monolog": "~1.12|^2.0"
   },
   "autoload": {