Automated submodule update: FBGEMM (#46443)
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/f20d61e1193a8b3566720ad2727b5e0d013b13a8
Pull Request resolved: https://github.com/pytorch/pytorch/pull/46443
Test Plan: Ensure that CI jobs succeed on GitHub before landing.
Reviewed By: dskhudia
Differential Revision: D24355446
fbshipit-source-id: dc2900367d5de37e67efa963cb2c417e29fe7a88
