Update dependency phpunit/phpunit to v12

| datasource | package         | from    | to     |
| ---------- | --------------- | ------- | ------ |
| packagist  | phpunit/phpunit | 10.5.63 | 12.5.8 |


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

Author: renovate[bot]

composer.json

@@ -16,7 +16,7 @@
     "require": {
         "php": "~8.1.0 || ~8.2.0 || ~8.3.0 || ~8.4.0",
         "laminas/laminas-cache": "^4.1.0",
-        "phpunit/phpunit": "^10.5.45",
+        "phpunit/phpunit": "^10.5.45 || ^12.0.0",
         "psr/cache": "^2.0 || ^3.0",
         "psr/clock": "^1.0",
         "psr/container": "^2.0",