Bump python_orocos_kdl/pybind11 from 10889fe to 6b92b6e (#467)

Bumps [python_orocos_kdl/pybind11](https://github.com/pybind/pybind11) from `10889fe` to `6b92b6e`.
- [Release notes](https://github.com/pybind/pybind11/releases)
- [Commits](pybind/pybind11@10889fe...6b92b6e)

---
updated-dependencies:
- dependency-name: python_orocos_kdl/pybind11
  dependency-type: direct:production
...

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