GHSA-mfj5-cf8g-g2fv

### Summary

When making any HTTP request, the automatically enabled and self-managed `CookieStore` (aka cookie jar) will silently replace explicitly defined `Cookie`s with any that have the same name from the cookie jar. For services that operate with multiple users, this can result in one user's `Cookie` being used for another user's requests.

### Details

This issue is described without security warnings here:

https://github.com/AsyncHttpClient/async-http-client/issues/1964

A PR to fix this issue has been made:

https://github.com/AsyncHttpClient/async-http-client/pull/2033

### PoC

1. Add an auth `Cookie` to the `CookieStore` - This is identical to receiving an HTTP response that uses `Set-Cookie`, as shown in issue #1964 above. 2. Handle a different user's request where the same `Cookie` is provided as a passthrough, like a JWT, and attempt to use it by explicitly providing it. 3. Observe that the user's cookie in step 2 is passed as the Cookie in step 1.

### Impact

This is generally going to be a problem for developers of backend services that implement third party auth features and use other features like token refresh. The moment a third party service responds by _setting_ a cookie in the response, the `CookieStore` will effectively break almost every follow-up request (hopefully by being rejected, but possibly by revealing a different user's information).

If your service sets cookies based on the response that happens here, it's possible to lead to even greater levels of exposure.

### Workaroud

You can avoid this issue by disabling the `CookieStore` during client creation:

```java DefaultAsyncHttpClientConfig.Builder clientBuilder = Dsl.config() .setCookieStore(null) // other configuration ; ```