Update dependency phpunit/phpunit to v13

| datasource | package         | from    | to     |
| ---------- | --------------- | ------- | ------ |
| packagist  | phpunit/phpunit | 11.5.50 | 13.0.0 |


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

Author: renovate[bot]

composer.json

@@ -50,7 +50,7 @@
         "laminas/laminas-diactoros": "^3.8",
         "pear/archive_tar": "^1.6.0",
         "pear/pear": "^1.10.16",
-        "phpunit/phpunit": "^11.5.42",
+        "phpunit/phpunit": "^13.0.0",
         "psalm/plugin-phpunit": "^0.19.5",
         "vimeo/psalm": "^6.13.1"
     },