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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
})], utils.noop);
      onUploadProgress && data.on('progress', progress => {
        onUploadProgress(Object.assign(progress, {
          upload: true
        }));
      });
    }
    
    let auth = undefined;
    if (config.auth) {
      const username = config.auth.username || '';
      const password = config.auth.password || '';
      auth = username + ':' + password;
    }
    if (!auth && parsed.username) {
      const urlUsername = parsed.username;
      const urlPassword = parsed.password;
      auth = urlUsername + ':' + urlPassword;
    }
    auth && headers.delete('authorization');
    let path;
    try {
      path = buildURL(
        parsed.pathname + parsed.search,
        config.params,
        config.paramsSerializer
      ).replace(/^\?/, '');
    } catch (err) {
      const customErr = new Error(err.message);
      customErr.config = config;