Add definition for truffleruby+graalvm GFTC dev build

[rwstauner]

Some releases don't include the assets we are looking for so loop through releases, sorted by date, to find the one we are looking for.

[nirvdrum]

I think this is fine, but how much work would it be to iterate through the most recent releases and find the latest one there? Also, just in case you don't know, ruby-build now supports the RUBY_BUILD_TARBALL_OVERRIDE environment variable to specify the URL for a tarball to install.

[rwstauner]

In the past I've had trouble looping over releases and hitting an API limit since the requests are unauthenticated.
Could be worth trying though.

Thanks, I didn't realize there was an env var to override any ruby you're installing, that's good to know.
I was surprised I didn't see any other env vars in definitions, this would be why.
No reason to add another here.

[rwstauner]

This loop seems to work.
It was probably worth doing, I suspected we might eventually need something similar for the native version (since we started seeing those other releases pop up).

[rwstauner]

...and now we have an instance of them not being in the order we want, so we might need to try to sort the release names (they do contain dates) 🤔

[rwstauner]

This now correctly finds the desired asset in the 24.0.0-dev-20240207_2228 release