[iOS][CI] Fix the timeout for nightlies (#45798)
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/45798
Test Plan: Imported from OSS
Reviewed By: husthyc
Differential Revision: D24098451
Pulled By: xta0
fbshipit-source-id: 269517e0d54b0a07ea2ae5e2aee7f0ebc7985191
