Fixes #36349 - Update minitest version

[archanaserver]

Adding Ruby v3.1 support.

[ekohl]

Our current testing pipeline doesn't run on Ruby 3 so we don't know about any regressions. IMHO that's something to address.

What I would do in the short term is just a single commit that only updates the minitest dependency. Nothing else. That's a good change that has immediate benefits. Adding the required_ruby_version part to the gemspec has more implications, like fixing CI to verify Ruby 3 as well. Should also be done, but that's no reason to hold something that is already a good thing.

[ekohl]

I had a quick look at if this can be updated to a current version, but it blows up.

[ekohl]

One thing I found was #612, but that isn't enough to make it pass.

[evgeni]

[test hammer]

[evgeni]

ci config fixes in theforeman/jenkins-jobs#331

[ofedoren]

Well, since this PR is just about updating minitest version, can be the commit message updated? Also, even though this is a single line, I'd prefer a Redmine issue for that as well. Just in case we would need to track down the work towards Ruby 3+ support.

[archanaserver]

@ofedoren the commit message is updated now, also I've created a Redmine issue: https://projects.theforeman.org/issues/36349#change-167113
Are there any other changes that need to be made?

[ofedoren]

Thanks, @archanaserver, no other changes are required :)

@evgeni, are we good to go from the packaging perspective?

[evgeni]

We don't care for deps in Gemfile for packaging, so go! ;)

[ofedoren]

Thanks, all :)

[ofedoren]

Hmm... I've noticed that we still have even older version in hammer core: https://github.com/theforeman/hammer-cli/blob/master/Gemfile#LL10C26-L10C26. I'll open the PR.

UPD: done theforeman/hammer-cli#368.