Update phpunit/phpunit requirement from ^10.2 to ^11.4

Updates the requirements on [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) to permit the latest version.
- [Release notes](https://github.com/sebastianbergmann/phpunit/releases)
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/11.4.0/ChangeLog-11.4.md)
- [Commits](sebastianbergmann/phpunit@10.2.0...11.4.0)

---
updated-dependencies:
- dependency-name: phpunit/phpunit
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

composer.json

@@ -36,7 +36,7 @@
         "phpstan/phpstan-deprecation-rules": "^1.1",
         "phpstan/phpstan-phpunit": "^1.3",
         "phpstan/phpstan-strict-rules": "^1.5",
-        "phpunit/phpunit": "^10.2",
+        "phpunit/phpunit": "^11.4",
         "rector/rector": "^1.0.0"
     },
     "conflict": {