allow phpunit 13

Author: mathroc

composer.json

@@ -29,7 +29,7 @@
         "phpstan/phpstan": "^2.0",
         "phpstan/extension-installer": "^1.1",
         "phpstan/phpstan-strict-rules": "^2.0",
-        "phpunit/phpunit": "13.0.0",
+        "phpunit/phpunit": "^11.3||^12.0||^13.0",
         "texthtml/doctest": "^0.3.0"
     },
     "config": {