Update dependency phpunit/phpunit to v12

| datasource | package         | from   | to     |
| ---------- | --------------- | ------ | ------ |
| packagist  | phpunit/phpunit | 11.5.7 | 12.0.2 |

Author: renovate[bot]

composer.json

@@ -24,7 +24,7 @@
     },
     "require-dev": {
         "doctrine/coding-standard":               "^12.0.0",
-        "phpunit/phpunit":                        "^11.5.7",
+        "phpunit/phpunit":                        "^12.0.2",
         "psalm/plugin-phpunit":                   "^0.19.2",
         "roave/infection-static-analysis-plugin": "^1.36.0",
         "vimeo/psalm":                            "^6.5.1"