version 1.6.0

What's Changed

• Pi add claude workflow by @pendingintent in #292
• Release v 1.6 by @pendingintent in #291
• Pin ruff to <0.16 to fix CI lint failures by @pendingintent in #293
• Update cdisc-biomedical-concept-groupings submodule pointer by @pendingintent in #294

Full Changelog: v1.5.0...v1.6.0