Although this is a breaking change, as explained in the change-note, it
should onyl affect peopel that have created their own HTTP client
request modeling, which I assume is none.
The alternative would have been to keep the old class/module as
deprecated, and introduce a `HTTP::Client::Requestv2` class/module that
is based on `DataFlow::Node` instead. The old class could then be
deprecated in 1 year, and we could do a rename from
`HTTP::Client::Requestv2` -> `HTTP::Client::Request` at the same time.
(and then wait 1 more year before being able to delete
`HTTP::Client::Requestv2`)
All in all, I think this is the right tradeoff, given that CodeQL Ruby
is still in beta.
