Update setup Ruby step in build job of verification workflow

[mondeja]

As you can see in this run, the bundle command does not exists in the instance for ruby which executes the "Build Website" job. This is happening in all new pull requests because Github Actions now uses Ubuntu 20.04 specifying ubuntu-latest. I've been investigating this and seems that the action actions/setup-ruby is not maintained, with bugs in Ubuntu 20.04, and do not explicitly specify Bundler availability, so I've changed by ruby/setup-ruby action that seems better maintained, supports a lot of versions and explicitly declares Bundler availability.

Also, I've updated the Ruby version to 2.7 because Ruby v2.5 will reach their EOL at 2021-03-31.

[ericcornelissen]

Oops... seems like I had too much fate in GitHub 😅 I'm very surprised actions/setup-ruby is already not being maintained any more, especially given that most of GitHub's infrastructure is build on Ruby!

Anyway, thanks for the investigation and quick fix @mondeja. I agree with your decision given the discussion in actions/setup-ruby#70, I'm also completely okay with updating to Ruby 2.7 - with Ruby I'm not as worried since it only builds our website and doesn't affect users of the packages.

And my apologies to everyone who experienced any difficulty due to this problem 😞

[mondeja]

And my apologies to everyone who experienced any difficulty due to this problem

I don't think it's your fault, I think that Github Actions is not well supported by the platform. Beyond this, I've seen this kind of lack of maintenance in many of the Github related repositories. Perhaps the most sensible thing to do is to stop trusting that "official" actions are the best.

[ericcornelissen]

I don't think it's your fault, I think that Github Actions is not well supported by the platform. Beyond this, I've seen this kind of lack of maintenance in many of the Github related repositories. Perhaps the most sensible thing to do is to stop trusting that "official" actions are the best.

I'm afraid so... 😞