Fixing the torch and sbi version to the last actively tested ones

[famura]

So the thing is that the two flavors with build the libtorch.so could be removed if we would update to the latest torch v1.X

As nice as it sounds, this requires a lot of effort, i.e.:

1. Removing the entire block with USE_LIBTORCH in rcspysim (CMakeLists and the root setup.py)
2. Replacing to.lstsq(self.conds[:, idx_act], feats).solution with to.linalg.lstsq(feats, self.conds[:, idx_act]).solution in `ploy_time.py

In fact, I think we could even just install torch and all the torch-dependent libs in setup_deps.py simply with pip and make everything way cleaner. Unfortunately, I do not have the time for that and rather archive this project at the last state where I know it worked. Therefore, I undid the recent change that removed the --no-deps when installing gpytorch and botorch.

[miterion]

Lgtm

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (f3e88a5) 61.48% compared to head (c1e8df6) 61.48%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #102   +/-   ##
=======================================
  Coverage   61.48%   61.48%           
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  Files         199      199           
  Lines       20176    20176           
=======================================
  Hits        12405    12405           
  Misses       7771     7771           

Flag	Coverage Δ
unittests	61.48% <ø> (ø)

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