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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
import axios from '../../../index.js';
import http from 'http';
import https from 'https';
import net from 'net';
import url from 'url';
import zlib from 'zlib';
import stream from 'stream';
import util from 'util';
import assert from 'assert';
import fs from 'fs';
import path from 'path';
let server, proxy;
import AxiosError from '../../../lib/core/AxiosError.js';
import FormData from 'form-data';
import formidable from 'formidable';
import express from 'express';
import multer from 'multer';
import bodyParser from 'body-parser';
const isBlobSupported = typeof Blob !== 'undefined';
import {Throttle} from 'stream-throttle';
import devNull from 'dev-null';
import {AbortController} from 'abortcontroller-polyfill/dist/cjs-ponyfill.js';
import {__setProxy} from "../../../lib/adapters/http.js";
const __filename = url.fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
import getStream from 'get-stream';
function setTimeoutAsync(ms) {