Update ci.yml

[gogainda]

No description provided.

[pointlessone]

I appreciate your enthusiasm about TruffleRuby but I'd like to keep our current set of rubies as well.

[gogainda]

I will revert it back, just want to skip all other ruvies for now

[pointlessone]

OK. Let me know when this PR is ready.

[gogainda]

@pointlessone tests are passing, but rubocop fails due to a bug, so without upgrading rubocop to the 0.90 version truffleruby cannot be enabled right now

[gogainda]

I tried to upgrade the rubocop version to 0.90 and it helped, but it introduced some failing checks which are part of newer version of rubocop.

[eregon]

@gogainda Could you just skip RuboCop on TruffleRuby? (using a separate workflow which doesn't use container:).
It would be redundant anyway and just make the build slower.

[pointlessone]

I tried adding truffleruby in the latest CI update and encountered some issues.

Specifically, build fails with truffleruby and the failure is some sort of error in Rubocop.

At the moment I don't see truffleruby feasible. Especially since there's no one on the team using it. We'll gladly accept help from someone who's willing to spend their time regularly fixing compatibility issues.

[eregon]

Makes sense, I'll make a draft PR and try to get it working.
It would be valuable to test latest Prawn + TruffleRuby since it's a non-trivial codebase and actually all tests pass fine.

[eregon]

#1189