Bump openhands-ai from 0.11.0 to 0.12.0

Bumps [openhands-ai](https://github.com/All-Hands-AI/OpenHands) from 0.11.0 to 0.12.0.
- [Release notes](https://github.com/All-Hands-AI/OpenHands/releases)
- [Commits](All-Hands-AI/OpenHands@0.11.0...0.12.0)

---
updated-dependencies:
- dependency-name: openhands-ai
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>