Tests are failing due to Bundler requiring Ruby 3

[ZimbiX]

Failure

ERROR:  Error installing bundler:
	The last version of bundler (>= 0) to support your Ruby & RubyGems was 2.4.22. Try installing it with `gem install bundler -v 2.4.22`
	bundler requires Ruby version >= 3.0.0. The current ruby version is 2.7.8.225.

[ZimbiX]

This must be where the problem is:

que/.github/workflows/tests.yml

Line 48 in fb9278e

gem install bundler

[ZimbiX]

Resolved in #421