add support for Laravel 8

Author: skyronic

composer.json

@@ -10,10 +10,10 @@
     }],
     "require": {
         "php": ">=5.6.4",
-        "illuminate/support": "^5.4|^6.0|^7.0",
-        "illuminate/console": "^5.4|^6.0|^7.0",
-        "illuminate/view": "^5.4|^6.0|^7.0",
-        "illuminate/filesystem": "^5.4|^6.0|^7.0",
+        "illuminate/support": "^5.4|^6.0|^7.0|^8.0|^9.0",
+        "illuminate/console": "^5.4|^6.0|^7.0|^8.0|^9.0",
+        "illuminate/view": "^5.4|^6.0|^7.0|^8.0|^9.0",
+        "illuminate/filesystem": "^5.4|^6.0|^7.0|^8.0|^9.0",
         "symfony/finder": "^5.0"
     },
     "require-dev": {