composer(deps-dev): Bump phpunit/phpunit from 10.5.8 to 10.5.9

Bumps [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) from 10.5.8 to 10.5.9.
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/10.5.9/ChangeLog-10.5.md)
- [Commits](sebastianbergmann/phpunit@10.5.8...10.5.9)

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

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

composer.json

@@ -30,7 +30,7 @@
     "ergebnis/php-cs-fixer-config": "~6.19.0",
     "ergebnis/phpunit-slow-test-detector": "^2.9.0",
     "infection/infection": "~0.27.9",
-    "phpunit/phpunit": "^10.5.8",
+    "phpunit/phpunit": "^10.5.9",
     "psalm/plugin-phpunit": "~0.18.4",
     "rector/rector": "~0.19.2",
     "roave/backward-compatibility-check": "^8.6.0",