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#### Describe the bug
Some servers are not sending a zlib header in their deflated data. CURL had the same problem and implemented a "fix" for it: https://github.com/curl/curl/blob/5c932f8fe9dad94a7417702958ffa9e8db67c549/lib/content_encoding.c#L227-L229

Axios is also returning a `Z_DATA_ERROR` in this case.

#### To Reproduce

Use axios to request a page without a zlib header in the deflated data (e.g. https://www.konicaminolta.eu/eu-en/about-us/corporate-book) and force it to only accept deflate encoding.

```js
let url = 'https://www.konicaminolta.eu/eu-en/about-us/corporate-book';
let config = {
  headers: { 'Accept-Encoding': 'deflate' }
};

await axios.get(url, config);
```

#### Expected behavior

Getting the correctly inflated data.

#### Environment
 - Axios Version [0.21.1]


#### Additional context/Screenshots


lib/adapters/http.js
if (method !== 'GET') {
        return settle(resolve, reject, {
          status: 405,
          statusText: 'method not allowed',
          headers: {},
          config
        });
      }
      try {
        convertedData = fromDataURI(config.url, responseType === 'blob', {
          Blob: config.env && config.env.Blob
        });
      } catch (err) {
        throw AxiosError.from(err, AxiosError.ERR_BAD_REQUEST, config);
      }
      if (responseType === 'text') {
        convertedData = convertedData.toString(responseEncoding);
        if (!responseEncoding || responseEncoding === 'utf8') {
          data = utils.stripBOM(convertedData);
        }
      } else if (responseType === 'stream') {
        convertedData = stream.Readable.from(convertedData);
      }
      return settle(resolve, reject, {
        data: convertedData,
        status: 200,
        statusText: 'OK',
        headers: new AxiosHeaders(),
        config
      });