bump illuminate version to be laravel 9 compatible

Author: Max-Hutschenreiter

composer.json

@@ -17,7 +17,7 @@
     ],
     "require": {
         "php": ">7.1",
-        "illuminate/support": "^8.0",
+        "illuminate/support": "^9.0",
         "spatie/laravel-medialibrary": "^9.0.0"
     },
     "require-dev": {