Update phpunit/phpunit requirement from ^10.5 to ^10.5 || ^12.0

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/12.4.3/ChangeLog-12.4.md)
- [Commits](sebastianbergmann/phpunit@10.5.0...12.4.3)

---
updated-dependencies:
- dependency-name: phpunit/phpunit
  dependency-version: 12.4.3
  dependency-type: direct:development
...

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

Author: dependabot[bot]

composer.json

@@ -48,7 +48,7 @@
         "ext-pdo": "*",
         "cakephp/cakephp-codesniffer": "^5.0",
         "cakephp/i18n": "^5.0",
-        "phpunit/phpunit": "^10.5",
+        "phpunit/phpunit": "^10.5 || ^12.0",
         "symfony/yaml": "^4.0|^5.0|^6.0|^7.0"
     },
     "autoload": {