Chore(deps-dev): Bump phpunit/phpunit in /vendor-bin/phpunit

Bumps [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) from 9.6.22 to 12.3.4.
- [Release notes](https://github.com/sebastianbergmann/phpunit/releases)
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/12.3.4/ChangeLog-12.3.md)
- [Commits](sebastianbergmann/phpunit@9.6.22...12.3.4)

---
updated-dependencies:
- dependency-name: phpunit/phpunit
  dependency-version: 12.3.4
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

vendor-bin/phpunit/composer.json

@@ -1,5 +1,5 @@
 {
     "require-dev": {
-        "phpunit/phpunit": "^9"
+        "phpunit/phpunit": "^12"
     }
 }