Pin pycocotools version to make the patch work (#1224)
Summary:
Fixes https://github.com/pytorch/benchmark/issues/1218
Pull Request resolved: https://github.com/pytorch/benchmark/pull/1224
Reviewed By: erichan1
Differential Revision: D40033109
Pulled By: erichan1
fbshipit-source-id: 629d9de5712950c8ee40ada8a9ef6c51804e9658
