composer(deps-dev): Bump phpstan/phpstan-phpunit from 2.0.3 to 2.0.4

Bumps [phpstan/phpstan-phpunit](https://github.com/phpstan/phpstan-phpunit) from 2.0.3 to 2.0.4.
- [Release notes](https://github.com/phpstan/phpstan-phpunit/releases)
- [Commits](phpstan/phpstan-phpunit@2.0.3...2.0.4)

---
updated-dependencies:
- dependency-name: phpstan/phpstan-phpunit
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

composer.json

@@ -31,7 +31,7 @@
     "phpstan/extension-installer": "^1.4.3",
     "phpstan/phpstan": "^2.1.2",
     "phpstan/phpstan-deprecation-rules": "^2.0.1",
-    "phpstan/phpstan-phpunit": "^2.0.3",
+    "phpstan/phpstan-phpunit": "^2.0.4",
     "phpstan/phpstan-strict-rules": "^2.0.3",
     "phpunit/phpunit": "^10.5.27",
     "rector/rector": "^2.0.7",