third_party: Update pybind to point to fork (#48117)
Summary:
There are specific patches we need for Python 3.9 compatibilty and that
process is currently hung up on separate issues.
Let's update to a newer version of our forked pybind to grab the Python
3.9 fixes while we wait for them to be upstreamed
Signed-off-by: Eli Uriegas <eliuriegas@fb.com>
Pull Request resolved: https://github.com/pytorch/pytorch/pull/48117
Relates to: https://github.com/pybind/pybind11/pull/2657
Full comparison for this update looks like this: https://github.com/pybind/pybind11/compare/59a2ac2745d8a57ac94c6accced73620d59fb844...seemethere:v2.6-fb
Fixes https://github.com/pytorch/pytorch/issues/47776
Pull Request resolved: https://github.com/pytorch/pytorch/pull/48120
Reviewed By: gchanan
Differential Revision: D25030688
Pulled By: seemethere
fbshipit-source-id: 10889c813aeaa70ef1298adad5c631e6b5a39d72
