Fix index when installing torch through smart build

[ashao]

Torch changed something in their indexing when trying to install from their provided wheels. This updates the pip install command within smart build to ensure that the appropriate packages can be found.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (142ddc1) 90.34% compared to head (73846b9) 90.42%.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #449      +/-   ##
===========================================
+ Coverage    90.34%   90.42%   +0.08%     
===========================================
  Files           60       60              
  Lines         3748     3738      -10     
===========================================
- Hits          3386     3380       -6     
+ Misses         362      358       -4     

see 3 files with indirect coverage changes

[ankona]

LGTM!