Reduce compatibility to ^8.0 - ^8.3

Author: leonardfischer

composer.json

@@ -24,7 +24,7 @@
         "source": "https://github.com/i-doit/api-client-php"
     },
     "require": {
-        "php": "^8.0 || ^8.1 || ^8.2 || ^8.3 || ^8.4",
+        "php": "^8.0 || ^8.1 || ^8.2 || ^8.3",
         "ext-curl": "*",
         "ext-date": "*",
         "ext-json": "*",