Release v2.7.29 - Critical dependency fix

🔴 CRITICAL FIX: Remove non-existent dependencies

Fixed:
- Removed @xenova/transformers@^3.2.0 (doesn't exist on npm)
- Removed onnxruntime-node@^1.23.0
- Installation now works correctly

Impact:
- Fixes broken installs for v2.7.24-v2.7.28
- All Docker tests passing
- No code changes (optional deps only)

Fixes #858