Pin the version of scipy for Windows test jobs (#40369)
Summary:
Fixes https://github.com/pytorch/pytorch/issues/40366.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/40369
Differential Revision: D22160114
Pulled By: malfet
fbshipit-source-id: ea4c1349fc83787853d4925e7d0a2a63aecf0d77
