update package versions

Author: JonathanLouw

composer.json

@@ -12,13 +12,13 @@
     "homepage": "https://github.com/codinglabsau/laravel-roles",
     "keywords": ["Laravel", "Roles"],
     "require": {
-        "php" : "^7.2.5",
-        "illuminate/support": "^5.8|^6.0|^7.0"
+        "php" : "^7.2",
+        "illuminate/support": "^6.0|^7.0|^8.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^8.0",
+        "phpunit/phpunit": "^8.0|^9.0",
         "mockery/mockery": "^1.1",
-        "orchestra/testbench": "~3|~4",
+        "orchestra/testbench": "^4.0|^5.0|^6.0",
         "sempro/phpunit-pretty-print": "^1.0"
     },
     "autoload": {