[ci] appveyor improvements, test on a wider range of ruby versions #21892
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Extracted from #21685 which will take time to land.
This also resolves #21684 (for those using ruby 2.7 and above).
Checklist
bundle exec rspec
from the root directory to see all new and existing tests passbundle exec rubocop -a
to ensure the code style is validci/circleci
builds in the "All checks have passed" section of my PR (connect CircleCI to GitHub if not)Motivation and Context
Description
Testing Steps