chore(deps-dev): update orchestra/testbench requirement

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

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

composer.json

@@ -22,7 +22,7 @@
         "http-interop/http-factory-guzzle": "^1.0",
         "mockery/mockery": "~1.3",
         "nunomaduro/larastan": "^1.0.4",
-        "orchestra/testbench": "^5.0|^6.0|^7.0|^8.0",
+        "orchestra/testbench": "^9.1.2",
         "phpunit/phpunit": "^9.3"
     },
     "autoload": {