chore: bump version to 1.2.1

[sanifhimani]

Description

Fixes #

Please, include a summary of what the PR is for:

• What is the problem it is solving?
• What is the context of these changes?
• What is the impact of this PR?

How has this been tested?

Please, describe the tests that you ran to verify your changes. Provide instructions so reviewers can reproduce.

VCR Cassettes

• N/A - No new API endpoints
• I have recorded new VCR cassettes for the new API functionality
• I need help recording VCR cassettes (don't have API access)
• I have verified cassettes don't contain sensitive data

Checklist:

• I have performed a self-review of my own code.
• I have added tests that prove my fix is effective or that my feature works.
• All tests pass locally (bundle exec rake spec).
• RuboCop passes with no offenses (bundle exec rake rubocop).
• I have added a changelog line.

Documentation:

• N/A - No documentation changes needed
• I have updated the documentation site (see Contributing Guide)
• I have updated the README if this changes public API or adds new features