Exclude unsactioned region on GitLab.com purchase page

Background: https://gitlab.com/gitlab-com/legal-and-compliance/-/issues/1024

Problem

On the country pick list, "Ukraine" specifically excludes "the Crimea Region" but should be updated to exclude "the Crimea, Donetsk, and Luhansk regions"

image

Proposal

Exclude "the Crimea, Donetsk, and Luhansk regions"

Result

Country list is compliant

Next steps (if any)

How will we measure success?