Update dependency phpunit/phpunit to v12

| datasource | package         | from    | to     |
| ---------- | --------------- | ------- | ------ |
| packagist  | phpunit/phpunit | 10.5.41 | 12.0.2 |


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

composer.json

@@ -49,7 +49,7 @@
         "laminas/laminas-diactoros": "^3.4.0",
         "laminas/laminas-stratigility": "^4.0.2",
         "mikey179/vfsstream": "^1.6.12",
-        "phpunit/phpunit": "^10.5.36",
+        "phpunit/phpunit": "^12.0.0",
         "psalm/plugin-phpunit": "^0.19.0",
         "vimeo/psalm": "^5.26.1"
     },