Automated submodule update: FBGEMM (#39322)
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/7d673046a6a3ad1fa0d15dfb189cd06ffa217041
Pull Request resolved: https://github.com/pytorch/pytorch/pull/39322
Test Plan: Ensure that CI jobs succeed on GitHub before landing.
Reviewed By: jianyuh
Differential Revision: D21814389
fbshipit-source-id: cec819a28f08915e2443f405d42efaa41a523bc8
