.github: Increase test shards for linux GPU (#60914)
Summary:
Pull Request resolved: https://github.com/pytorch/pytorch/pull/60914
Linux GPU tests are taking almost 4 hours to execute through, let's up
the test shards for these jobs so they finish in a more timely fashion
Signed-off-by: Eli Uriegas <eliuriegas@fb.com>
Test Plan: Imported from OSS
Reviewed By: samestep
Differential Revision: D29461968
Pulled By: seemethere
fbshipit-source-id: a1eab08f9cd3abd8ceca48871fe702d0bccd8a3f
