OSCAL v1.2.1 Release

Summary

The latest OSCAL 1.2.1 is a patch release.

What's Changed

• Bump js-yaml and markdown-link-check in /build by @dependabot[bot] in #2176
• Bump actions/setup-node from 6.1.0 to 6.2.0 by @dependabot[bot] in #2185
• OSCAL 1.2.1 patch changes by @iMichaela in #2203

Full Changelog: v1.2.0...v1.2.1