Update dependency phpunit/phpunit to v11

Author: renovate[bot]

composer.json

@@ -10,7 +10,7 @@
     ],
     "require": {
         "php": "^8.2",
-        "phpunit/phpunit": "^10.5",
+        "phpunit/phpunit": "^10.5 || ^11.0",
         "react/async": "^4.2.0",
         "react/event-loop": "^1.5.0",
         "react/promise": "^3.1"