Hugging Face releases LeRobot v0.5.0 with new policies and hardware support

Evidence notes
- Hugging Face released LeRobot v0.5.0 with new policies including Pi0-FAST, additional motor-controller support, and expanded robot-learning capabilities.
- The update broadened actuator compatibility and extended the model zoo for open-source robotics development.
- This is a strong research-release event because it deepens LeRobot's role as a general robotics experimentation and deployment stack.