Update phpunit/phpunit requirement from ^9.5.6 to ^9.5.6 || ^10.0.0

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/main/ChangeLog-10.0.md)
- [Commits](sebastianbergmann/phpunit@9.5.6...10.0.4)

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

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

composer.json

@@ -17,7 +17,7 @@
     "require": {
         "php": "~8.1.0 || ~8.2.0",
         "ext-dom": "*",
-        "phpunit/phpunit": "^9.5.6",
+        "phpunit/phpunit": "^9.5.6 || ^10.0.0",
         "php-soap/engine": "^1.3",
         "php-soap/xml": "^1.4",
         "php-vcr/php-vcr": "^1.6.0",