revert laravel 8 support

Author: veneliniliev

composer.json

@@ -19,12 +19,12 @@
     ],
     "require": {
         "php": "^8.0.2",
-        "illuminate/contracts": "^8.83|^9.0",
-        "illuminate/http": "^8.83|^9.0",
-        "illuminate/support": "^8.83|^9.0"
+        "illuminate/contracts": "^8.0|^9.0",
+        "illuminate/http": "^8.0|^9.0",
+        "illuminate/support": "^8.0|^9.0"
     },
     "require-dev": {
-        "orchestra/testbench": "^7.0",
+        "orchestra/testbench": "^6.0|^7.0",
         "phpunit/phpunit": "^9.0"
     },
     "autoload": {