Upgrade for Laravel 8

Author: zyxxyzyxz

composer.json

@@ -10,9 +10,8 @@
     ],
     "require": {
         "php": ">=5.4.0",
-        "illuminate/support": "~5|~6|~7",
-        "omnipay/common": "~3.0",
-        "php-http/guzzle6-adapter": "^1.1|^2"
+        "illuminate/support": "~5|~6|~7|~8",
+        "omnipay/common": "~3.0"
     },
     "autoload": {
         "psr-0": {