[pytorch] Update fmt to 7.0.3 (#45304)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/45304
As title
Test Plan: sandcastle
Reviewed By: malfet
Differential Revision: D23916328
fbshipit-source-id: 47c76886c1f17233304dc59289ff6baa16c50b8d
