Allow PHP 8

Author: mpociot

composer.json

@@ -16,14 +16,14 @@
         }
     ],
     "require": {
-        "php": "^7.3",
+        "php": "^7.3|^8.0",
         "illuminate/view": "^6.0|^7.0|^8.0",
         "illuminate/console": "^6.0|^7.0|^8.0",
         "illuminate/mail": "^6.0|^7.0|^8.0"
     },
     "require-dev": {
-        "orchestra/testbench": "^5.1",
-        "phpunit/phpunit": "^8.0"
+        "orchestra/testbench": "^5.1|^6.3",
+        "phpunit/phpunit": "^8.0|^9.0"
     },
     "autoload": {
         "psr-4": {