Merge pull request #11861 from liviuconcioiu/diff

Allow sebastian/diff 9

Author: danog

composer.json

@@ -39,7 +39,7 @@
         "fidry/cpu-core-counter": "^0.4.1 || ^0.5.1 || ^1.0.0",
         "netresearch/jsonmapper": "^5.0",
         "nikic/php-parser": "^5.0.0",
-        "sebastian/diff": "^4.0 || ^5.0 || ^6.0 || ^7.0 || ^8.0",
+        "sebastian/diff": "^4.0 || ^5.0 || ^6.0 || ^7.0 || ^8.0 || ^9.0",
         "spatie/array-to-xml": "^2.17.0 || ^3.0",
         "symfony/console": "^6.0 || ^7.0 || ^8.0",
         "symfony/filesystem": "~6.3.12 || ~6.4.3 || ^7.0.3 || ^8.0",