Remove Ruby 2.6.6 dependency
What does this Merge Request do?
Mostly to avoid having to have folks build two versions of Ruby.
Also rolls the Ruby version forward in other parts of the project.
Merge Request checklist
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Tests added for new functionality. If not, please raise Issue to follow-up. -
This change is backward compatible. If not, please include steps to communicate to our users. -
Documentation added/updated, if needed. -
gdk doctor
test added, if needed.