fix: add reasoning_content to response message

Author: Kemel91

src/Responses/Chat/CreateResponseMessage.php

@@ -56,7 +56,7 @@ functionCall: isset($attributes['function_call']) ? CreateResponseFunctionCall::
     }
 
     /**
-     * @return array{role: string, content: string|null, reasoning_content?: string|null, annotations?: array<int, array{type: string, url_citation: array{start_index: int, end_index: int, title: string, url: string}}>, function_call?: array{name: string, arguments: string}, tool_calls?: array<int, array{id: string, type: string, function: array{name: string, arguments: string}}>, audio?: CreateResponseChoiceAudioType, images?: array<int, CreateResponseChoiceImageType>}
+     * @return array{role: string, content: string|null, reasoning_content?: string, annotations?: array<int, array{type: string, url_citation: array{start_index: int, end_index: int, title: string, url: string}}>, function_call?: array{name: string, arguments: string}, tool_calls?: array<int, array{id: string, type: string, function: array{name: string, arguments: string}}>, audio?: CreateResponseChoiceAudioType, images?: array<int, CreateResponseChoiceImageType>}
      */
     public function toArray(): array
     {