runtime error trying to deserialise non json responses

The Python API client throws a runtime exception while attempting to desialize a non json response. Note that, as described on the JavaScript API Client, we should **NOT** deserialise responses on those cases:

```js
isTimedOut || isNetworkError(response) || (~~(status / 100) !== 2 && ~~(status / 100) !== 4)
```

Source: https://github.com/algolia/algoliasearch-client-javascript/blob/master/packages/transporter/src/concerns/retryDecision.ts#L12.

Solution: Create a pull request that ensures that no `response.json()` is performed on the cases mentioned above.