Bump phpunit/phpunit from 10.5.60 to 12.5.4

Bumps [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) from 10.5.60 to 12.5.4.
- [Release notes](https://github.com/sebastianbergmann/phpunit/releases)
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/12.5.4/ChangeLog-12.5.md)
- [Commits](sebastianbergmann/phpunit@10.5.60...12.5.4)

---
updated-dependencies:
- dependency-name: phpunit/phpunit
  dependency-version: 12.5.4
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

composer.json

@@ -15,7 +15,7 @@
     "infinityloop-dev/graphpinator": "^2.0"
   },
   "require-dev": {
-    "phpunit/phpunit": "^10.4",
+    "phpunit/phpunit": "^10.4 || ^12.0",
     "infection/infection": "^0.29 || ^0.31",
     "phpstan/extension-installer": "^1.4",
     "phpstan/phpstan": "^2.0",