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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
total,
            progress,
            bytes,
            rate
          });
        },
        maxRate: [0, configRate],
        responseType: 'text',
        maxRedirects: 0
      });
      samples.slice(skip).forEach(({rate, progress}, i, _samples)=> {
        assert.ok(compareValues(rate, configRate),
          `Rate sample at index ${i} is out of the expected range (${rate} / ${configRate}) [${
            _samples.map(({rate}) => rate).join(', ')
          }]`
        );
        const progressTicksRate = 2;
        const expectedProgress = ((i + skip) / secs) / progressTicksRate;
        assert.ok(
          Math.abs(expectedProgress - progress) < 0.25,
          `Progress sample at index ${i} is out of the expected range (${progress} / ${expectedProgress}) [${
            _samples.map(({progress}) => progress).join(', ')
          }]`
        );
      });
      assert.strictEqual(data, buf.toString(), 'content corrupted');
    });
  });
  describe('request aborting', function() {
    it('should be able to abort the response stream', async function () {