Update orchestra/testbench requirement from ^7.0|^8.0 to ^9.9.0 (#51)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

composer.json

@@ -25,7 +25,7 @@
         "wamania/php-stemmer": "^2.0|^3.0|^4.0"
     },
     "require-dev": {
-        "orchestra/testbench": "^7.0|^8.0",
+        "orchestra/testbench": "^9.9.0",
         "squizlabs/php_codesniffer": "^3.5"
     },
     "scripts": {