Implement automated release workflow

[ewanharris]

Changes

Implements the automated release workflow for libraries published to RubyGems

References

Please include relevant links supporting this change such as a:

• support ticket
• community post
• StackOverflow post
• support forum thread
• related GitHub issue in this or another repo

Testing

Please describe how this can be tested by reviewers. Be specific about anything not tested and reasons why. If this library has unit and/or integration testing, tests should be added for new functionality and existing tests should complete without errors.

• [ ] This change adds unit test coverage
• [ ] This change has been tested on the latest version of the platform/language or why not

Checklist

• [x] I have read the Auth0 contribution guidelines
• [x] I have read the Auth0 Code of Conduct
• [ ] All existing and new tests complete without errors
• [ ] All code quality tools/guidelines in the CONTRIBUTING documentation have been run/followed