Fix broken pyre in CI

[kiukchung]

Fixes pyre checks broken in main due to fsspec being updated to 2023.1.0.
https://github.com/pytorch/torchx/actions/runs/6734942127/job/18306950235

Oddly, pyre checks passed in the PR (see: https://github.com/pytorch/torchx/actions/runs/6698472480) b/c for some reason pip decided to resolve to s3fs-0.6.0 (should've been s3fs-2023.1.0) when running pyre checks from the PR but s3fs-2023.1.0 when running pre checks from main

Test plan:

cd ~/workspace/torchx
pip install -U -r dev-requirements.txt
pyre --noninteractive check
2023-11-02 16:50:09,626 [PID 3429811] SUCCESS No type errors found