Update phpunit/phpunit requirement from ^9.5 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@9.5.0...11.4.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

composer.json

@@ -31,7 +31,7 @@
     "roave/security-advisories": "dev-master",
     "symfony/security-bundle": "^4.1.9 || ^5",
     "symfony/yaml": "^4.1.9 || ^5",
-    "phpunit/phpunit": "^9.5",
+    "phpunit/phpunit": "^11.4",
     "phpstan/phpstan": "^1.2",
     "thecodingmachine/tdbm-fluid-schema-builder": "^1.0.0",
     "symfony/framework-bundle": "^5.2"