Update dependency phpunit/phpunit to v13

Author: renovate[bot]

composer.json

@@ -26,7 +26,7 @@
     "phpdocumentor/reflection-docblock": "~6.0"
   },
   "require-dev": {
-    "phpunit/phpunit": "~6.0 || ~7.0 || ~9.0",
+    "phpunit/phpunit": "~13.0",
     "phpstan/phpstan": "^2.0"
   },
   "support": {