downgrade php unit

Author: ilvalerione

composer.json

@@ -27,7 +27,7 @@
     "require-dev": {
         "aws/aws-sdk-php": "^3.209",
         "elasticsearch/elasticsearch": "^8.0",
-        "phpunit/phpunit": "^10.5",
+        "phpunit/phpunit": "^9.0",
         "symfony/process": "^5.0|^6.0|^7.0",
         "typesense/typesense-php": "^5.0",
         "php-http/curl-client": "^2.3",