ci: Bump max_available for windows gpu to 100 (#83018)
Noticed we were hitting our limit for windows GPU so this just raises
the limit to a more sane value
<img width="1321" alt="Screen Shot 2022-08-08 at 1 21 03 PM" src="https://user-images.githubusercontent.com/1700823/183507438-f62310dc-57b5-4d46-8362-379d50fd8453.png">
You can see the number of times we've hit this in the past ^
Signed-off-by: Eli Uriegas <eliuriegas@fb.com>
Pull Request resolved: https://github.com/pytorch/pytorch/pull/83018
Approved by: https://github.com/malfet, https://github.com/janeyx99, https://github.com/atalman
