Update phpunit/phpunit requirement from ^10.5.18 to ^10.5.19

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/10.5.19/ChangeLog-10.5.md)
- [Commits](sebastianbergmann/phpunit@10.5.18...10.5.19)

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

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

composer.json

@@ -15,7 +15,7 @@
     },
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.54",
-        "phpunit/phpunit": "^10.5.18",
+        "phpunit/phpunit": "^10.5.19",
         "phpstan/phpstan": "^1.10.67",
         "rector/rector": "^1.0",
         "vimeo/psalm": "^5.23"