### Describe the issue

I've deployed successfully my backend to a serverless cloud service, but, unlike the local version, in the hosted app I'm getting an unreadable response rather than JSON as you can see below.

`"�\b�T�r�8���r�i�.~����FH�!�\t�01C���\\��*Y�T��e�{�=��{��NgY?_�]��Aӝ�.yQw?k/?��۬=�|���<��#�dd3)��6���l2\nJ]X��������e��^�?\r|�H`

### Example Code

```js
app.get('/api/get-my-books', (req, res) => {

    const address = req.query.address;
    const chain = "polygon";

    const options = {
        method: 'GET',
        url: `https://api.nftport.xyz/v0/accounts/${address}`,
        params: {
          chain: chain,
          include: 'metadata',
          contract_address: process.env.REACT_APP_DROP_CONTRACT
        },
        headers: {
          'Content-Type': 'application/json',
          Authorization: process.env.REACT_APP_NFT_PORT
        }
      };
      
      axios.request(options)
      .then((response) => {
        res.json(response.data);
      })
      .catch((error) => {
        console.error(error);
      });
});
```


### Expected behavior

A readable JSON response is expected.

### Axios Version

1.2.0

### Adapter Version

_No response_

### Browser

Chrome

### Browser Version

_No response_

### Node.js Version

14.19.1

### OS

_No response_

### Additional Library Versions

```bash
"cors": "^2.8.5",
"dotenv": "^16.0.3",
"express": "^4.18.2"
```


### Additional context/Screenshots

_No response_
test/unit/adapters/http.js
});
          res.on('end', function () {
            response.setHeader('Content-Type', 'text/html; charset=UTF-8');
            response.end(proxyAuth);
          });
        });
      }).listen(4000, function () {
        axios.get('http://localhost:4444/', {
          proxy: {
            host: 'localhost',
            port: 4000,
            auth: {
              username: 'user',
              password: 'pass'
            }
          }
        }).then(function (res) {
          var base64 = Buffer.from('user:pass', 'utf8').toString('base64');
          assert.equal(res.data, 'Basic ' + base64, 'should authenticate to the proxy');
          done();
        }).catch(done);
      });
    });
  });
  it('should support proxy auth from env', function (done) {
    server = http.createServer(function (req, res) {
      res.end();
    }).listen(4444, function () {
      proxy = http.createServer(function (request, response) {
        var parsed = url.parse(request.url);