Automated submodule update: FBGEMM (#46395)
Summary:
This is an automated pull request to update the first-party submodule for [pytorch/FBGEMM](https://github.com/pytorch/FBGEMM).
New submodule commit: https://github.com/pytorch/FBGEMM/commit/abc56f644d9bf9684603907ecd9eca53d6d0d0a2
Pull Request resolved: https://github.com/pytorch/pytorch/pull/46395
Test Plan: Ensure that CI jobs succeed on GitHub before landing.
Reviewed By: malfet
Differential Revision: D24333846
fbshipit-source-id: 307bbb7e857cd9e472d03374d3d3941128d807b5