[BUG] No cookie header attached when setting cookies in a request

[pisoj]

Describe the bug
When setting cookies in a request it doesn't seem they are actually sent to the server.

Code Sample
If applicable, add a small sample code that illustrates the error.
To verify this I run a simple http server with python:

python3 -m http.server

and tried to make a GET request with a sample cookie attached.

skrape(HttpFetcher) {
    request {
        url = "http://127.0.01:8000"
        cookies = mapOf("mycookie" to "myvalue")
    }

    response {
    }
}

Expected behavior
A clear and concise description of what you expected to happen.
I expected cookies to be put into a Cookie header and sent to the server.

Additional context
Unfortunately there was no Cookie header in the request.

Gradle dependency: implementation("it.skrape:skrapeit:1.1.5")