Specification CI job failing

[nicolasstucki]

Specification CI job failing on main branch.

Run gem update --system
ERROR:  Error installing rubygems-update:
	There are no versions of rubygems-update (= 3.5.1) compatible with your Ruby & RubyGems
	rubygems-update requires Ruby version >= 3.0.0. The current ruby version is 2.7.8.225.
ERROR:  While executing gem ... (NoMethodError)
    undefined method `version' for nil:NilClass
Updating rubygems-update
Error: Process completed with exit code 1.

• https://github.com/lampepfl/dotty/actions/runs/7240389886/job/19723319886

Solution

Probably update ruby version to 3.0.0 or greater. Maybe need to update other versions as well.