Update dependency phpunit/phpunit to v12

| datasource | package         | from   | to     |
| ---------- | --------------- | ------ | ------ |
| packagist  | phpunit/phpunit | 9.6.22 | 12.0.7 |


Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

composer.json

@@ -41,7 +41,7 @@
         "laminas/laminas-eventmanager": "^3.6.0",
         "laminas/laminas-hydrator": "^4.7",
         "laminas/laminas-servicemanager": "^3.19.0",
-        "phpunit/phpunit": "^9.5.25",
+        "phpunit/phpunit": "^12.0.0",
         "psalm/plugin-phpunit": "^0.19.2",
         "vimeo/psalm": "^6.8.8"
     },