Clean up workflow pip installs, run tests on Py3.10

[saitcakmak]

Summary: As titled. The # of pip install statements were getting out of hand...

Differential Revision: D39519257

[facebook-github-bot]

This pull request was exported from Phabricator. Differential Revision: D39519257

[Balandat]

gtmtl, thanks

[codecov-commenter]

Codecov Report

Base: 94.82% // Head: 94.81% // Decreases project coverage by -0.00% ⚠️

Coverage data is based on head (7a1b244) compared to base (57c53ac).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1138      +/-   ##
==========================================
- Coverage   94.82%   94.81%   -0.01%     
==========================================
  Files         411      411              
  Lines       36534    36555      +21     
==========================================
+ Hits        34643    34661      +18     
- Misses       1891     1894       +3     

Impacted Files	Coverage Δ
ax/utils/common/tests/test_docutils.py	76.19% <0.00%> (-4.77%)	⬇️
ax/models/torch/tests/test_optimizer_argparse.py	95.58% <0.00%> (-1.48%)	⬇️
ax/service/tests/test_scheduler.py	98.98% <0.00%> (-0.51%)	⬇️
ax/modelbridge/factory.py	100.00% <0.00%> (ø)
ax/modelbridge/registry.py	100.00% <0.00%> (ø)
ax/storage/metric_registry.py	100.00% <0.00%> (ø)
ax/storage/transform_registry.py	100.00% <0.00%> (ø)
ax/modelbridge/modelbridge_utils.py	100.00% <0.00%> (ø)
ax/service/utils/instantiation.py	98.20% <0.00%> (+<0.01%)	⬆️
ax/early_stopping/tests/test_strategies.py	99.59% <0.00%> (+0.01%)	⬆️
... and 3 more

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