Update phpunit/phpunit requirement from >=7.5 <10 to >=7.5 <11

Updates the requirements on [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) to permit the latest version.
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/10.4.2/ChangeLog-10.4.md)
- [Commits](sebastianbergmann/phpunit@7.5.0...10.4.2)

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

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

composer.json

@@ -31,7 +31,7 @@
     "require-dev": {
         "ext-json": "*",
         "goetas-webservices/xsd-reader": "^0.4",
-        "phpunit/phpunit": ">=7.5 <10",
+        "phpunit/phpunit": ">=7.5 <11",
         "phpstan/phpstan": "^1.0",
         "infection/infection": ">=0.16",
         "friendsofphp/php-cs-fixer": "^3.0",