Fix python version in test tools CI job (#66947)
Summary:
On the HUD, the test tools job is failing as the runners now install Python 3.10, which is not compatible with numpy 1.20
See https://github.com/pytorch/pytorch/runs/3952169950?check_suite_focus=true Install dependencies step:
```
ERROR: Command errored out with exit status 1:
command: /opt/hostedtoolcache/Python/3.10.0/x64/bin/python /opt/hostedtoolcache/Python/3.10.0/x64/lib/python3.10/site-packages/pip/_vendor/pep517/in_process/_in_process.py build_wheel /tmp/tmptq8aay7m
cwd: /tmp/pip-install-dk_6t98q/numpy_e9431bf106b746148c0e7c36e46551b4
Complete output (1169 lines):
setup.py:66: RuntimeWarning: NumPy 1.20.0 may not yet support Python 3.10.
```
Pull Request resolved: https://github.com/pytorch/pytorch/pull/66947
Reviewed By: suo, malfet
Differential Revision: D31799205
Pulled By: janeyx99
fbshipit-source-id: 64bf10c37c0aa4f5837c48e92d56e81d920722bd
