chore: drop nova 4 support

Author: jordyvanderhaegen

composer.json

@@ -18,7 +18,7 @@
     "require": {
         "php": "^8.2",
         "illuminate/support": "^11.0|^12.0",
-        "laravel/nova": "^4.35"
+        "laravel/nova": "^5.0"
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.5",
@@ -65,4 +65,4 @@
     },
     "minimum-stability": "dev",
     "prefer-stable": true
-}
+}