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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


test/unit/adapters/http.js
server = await startHTTPServer({
          rate: 100 * 1024
        });
        let content = '';
        const count = 10;
        const chunk = "test";
        const chunkLength = Buffer.byteLength(chunk);
        const contentLength = count * chunkLength;
        var readable = stream.Readable.from(async function* () {
          let i = count;
          while (i-- > 0) {
            await setTimeoutAsync(1100);
            content += chunk;
            yield chunk;
          }
        }());
        const samples = [];
        const {data} = await axios.post(LOCAL_SERVER_URL, readable, {
          onUploadProgress: ({loaded, total, progress, bytes, upload}) => {
            samples.push({
              loaded,
              total,
              progress,
              bytes,
              upload
            });
          },
          headers: {
            'Content-Length': contentLength
          },