Update orchestra/testbench requirement from ^8.22.3 to ^8.23.1

Updates the requirements on [orchestra/testbench](https://github.com/orchestral/testbench) to permit the latest version.
- [Release notes](https://github.com/orchestral/testbench/releases)
- [Changelog](https://github.com/orchestral/testbench/blob/9.x/CHANGELOG-8.x.md)
- [Commits](orchestral/testbench@v8.22.3...v8.23.1)

---
updated-dependencies:
- dependency-name: orchestra/testbench
  dependency-type: direct:development
...

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

composer.json

@@ -35,7 +35,7 @@
         "nunomaduro/larastan": "^2.9",
         "laravel/pint": "^1.15",
         "nunomaduro/collision": "^6.4.0",
-        "orchestra/testbench": "^8.22.3",
+        "orchestra/testbench": "^8.23.1",
         "pestphp/pest-plugin-laravel": "^1.4.0",
         "friendsofphp/php-cs-fixer": "^v3.58",
         "pestphp/pest-plugin-parallel": "^1.2",