Update dependency phpunit/phpunit to ^13.1.12

Author: renovate[bot]

composer.json

@@ -21,7 +21,7 @@
         "nikic/php-parser": "^5.7.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^13.1.11"
+        "phpunit/phpunit": "^13.1.12"
     },
     "config": {
         "platform": {