Exclude unsactioned region on GitLab.com purchase page
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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"

### Proposal
<!-- Consult with `@marc_disabatino-admin` on the customers-gitlab-com~20279829 team if Zuora business logic is involved. -->
Exclude "the Crimea, Donetsk, and Luhansk regions"
### Result
Country list is compliant
### Next steps (if any)
### How will we measure success?
issue