chore(deps): update dependency orchestra/testbench to v9

Author: renovate[bot]

composer.json

@@ -25,7 +25,7 @@
     "require-dev": {
         "exolnet/phpcs-config": "^2.0",
         "mockery/mockery": "^1.4.3",
-        "orchestra/testbench": "^7.0|^8.0",
+        "orchestra/testbench": "9.0.0",
         "phpunit/phpunit": "^9.3.3",
         "squizlabs/php_codesniffer": "^3.6.0"
     },