Fix deprecations triggered by PHP 8.5

The `curl_close` function is a no-op as of PHP 8.0 (when the curl
extension migrated from resources to objects) and is deprecated as of
PHP 8.5.

Author: stof

lib/WebDriver/Service/CurlService.php

@@ -87,7 +87,9 @@ public function execute($requestMethod, $url, $parameters = null, $extraOptions
             CURLE_GOT_NOTHING !== ($errno = curl_errno($curl)) &&
             $error = curl_error($curl)
         ) {
-            curl_close($curl);
+            if (\PHP_VERSION_ID < 80000) {
+                curl_close($curl);
+            }
 
             $e = new CurlExecException(
                 sprintf(
@@ -104,8 +106,9 @@ public function execute($requestMethod, $url, $parameters = null, $extraOptions
 
             throw $e;
         }
-
-        curl_close($curl);
+        if (\PHP_VERSION_ID < 80000) {
+            curl_close($curl);
+        }
 
         return [$rawResult, $info];
     }