fix(tests): drop deprecated curl_close() call

curl_close() is a no-op since PHP 8.0 and is deprecated in PHP 8.5, so the
Generic.PHP.DeprecatedFunctions sniff flags it via reflection and fails
`make cs` on the 8.5 CI matrix. The CurlHandle is freed automatically when
$ch goes out of scope.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: Spamercz

tests/SpameriTests/ElasticQuery/AbstractElasticTestCase.php

@@ -105,7 +105,6 @@ protected function request(
 		}
 
 		$response = \curl_exec($ch);
-		\curl_close($ch);
 
 		if ($response === false) {
 			return [];