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.
- [Release notes](https://github.com/sebastianbergmann/phpunit/releases)
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/10.5.16/ChangeLog-10.5.md)
- [Commits](sebastianbergmann/phpunit@9.6.0...10.5.16)

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

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

composer.json

@@ -25,7 +25,7 @@
     },
     "require-dev": {
         "maglnet/composer-require-checker": "^4.2",
-        "phpunit/phpunit": "^9.6",
+        "phpunit/phpunit": "^10.5",
         "rector/rector": "^1.0.0",
         "roave/infection-static-analysis-plugin": "^1.25",
         "spatie/phpunit-watcher": "^1.23",