Bump phpunit/phpunit from 11.5.20 to 12.1.6

Bumps [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) from 11.5.20 to 12.1.6.
- [Release notes](https://github.com/sebastianbergmann/phpunit/releases)
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/12.1.6/ChangeLog-12.1.md)
- [Commits](sebastianbergmann/phpunit@11.5.20...12.1.6)

---
updated-dependencies:
- dependency-name: phpunit/phpunit
  dependency-version: 12.1.6
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

composer.json

@@ -28,7 +28,7 @@
         "laravel/sail": "^1.28",
         "mockery/mockery": "^1.6",
         "nunomaduro/collision": "^8.0",
-        "phpunit/phpunit": "^11.0",
+        "phpunit/phpunit": "^12.1",
         "spatie/laravel-ignition": "^2.4"
     },
     "autoload": {