Fix to not specify responseType when there is no response

[gahyuun]

Environment

fetch-ax 1.0.10 version

Reproduction

// api
await instance.patch(`${API_PATH.user}/password`, body);

// error
SyntaxError: Unexpected end of JSON input

Describe the bug

When there is no response body, the error occurs because it is parsed as response.json(). ( responseType's default value is json)
I think we should implement the feature to parse based on content-type.

Additional context

No response

Logs

No response