Allow version selectors to specify tags with regex

[canny]

This would return all consumer pacts with tags that matches the provided regex.
Adding this would allow consumers and providers to coordinate development with known branch patterns
ex:
tagPattern: .*-new-feature
Would return any pact that has a tag suffix of -new-feature

https://pact.canny.io/admin/board/feature-requests/p/allow-version-selectors-to-specify-tags-with-regex

[canny]

This issue has been linked to a Canny post: Allow version selectors to specify tags with regex 🎉

[YOU54F]

Kyle Florence - August 5, 2021

We do this currently with an in-house solution since we are on a monorepo and it's easiest to manage deploys with separate branches for consumer and provider changes. In our case, we match on "pact=(\w+)" for branches like "feature/service/foo/pact=foo_bar_20210131/TICKET-123".