Issue #3393190 by jurgenhaas: Drupal 10 only version

composer.json

@@ -6,5 +6,8 @@
   "license": "GPL-2.0-or-later",
   "require": {
     "php": ">=8.1"
+  },
+  "require-dev": {
+    "drupal/config_split": "^2.0"
   }
 }