Update phpunit/phpunit requirement from ^9.6 to ^10.5

Updates the requirements on [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) to permit the latest version.
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/10.5.3/ChangeLog-10.5.md)
- [Commits](sebastianbergmann/phpunit@9.6.0...10.5.3)

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

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

composer.json

@@ -15,7 +15,7 @@
         "symfony/framework-bundle": "^6.4 || ^7.0"
     },
     "require-dev": {
-        "phpunit/phpunit": "^9.6",
+        "phpunit/phpunit": "^10.5",
         "simple-bus/message-bus": "^6.0",
         "symfony/messenger": "^6.4 || ^7.0"
     },