Update approvers for ONNX (#71659)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/71659
Reviewed By: albanD, seemethere
Differential Revision: D33924156
Pulled By: malfet
fbshipit-source-id: 451aa349dcb49dea07f804d758a181254544c0a9
(cherry picked from commit cd773b93fb46cf48fd5076bb88edd8cd9e0250ad)
