Set the minimal version of the OpenSearch library

Author: wgriffioen

composer.json

@@ -33,7 +33,7 @@
     "require-dev": {
         "friendsofphp/php-cs-fixer": "^3.0",
         "nyholm/psr7": "^1.8",
-        "opensearch-project/opensearch-php": "^2.0",
+        "opensearch-project/opensearch-php": "^2.4.3",
         "php-http/mock-client": "^1.5",
         "phpstan/phpstan": "^2.1",
         "phpunit/phpunit": "^9.5",