Pin torch until #2248 is fixed

[gitanshu]

No description provided.

[codecov]

Codecov Report

Merging #2250 (314077b) into master (62bbc5c) will decrease coverage by 0.61%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2250      +/-   ##
==========================================
- Coverage   91.79%   91.18%   -0.62%     
==========================================
  Files         242      201      -41     
  Lines       17456    10977    -6479     
  Branches     2534     1371    -1163     
==========================================
- Hits        16024    10009    -6015     
+ Misses       1063      705     -358     
+ Partials      369      263     -106     

Impacted Files	Coverage Δ
src/garage/sampler/utils.py	0.00% <0.00%> (-77.05%)	⬇️
src/garage/torch/algos/pearl.py	48.64% <0.00%> (-31.00%)	⬇️
src/garage/envs/multi_env_wrapper.py	79.51% <0.00%> (-14.60%)	⬇️
src/garage/tf/policies/policy.py	77.77% <0.00%> (-13.53%)	⬇️
src/garage/sampler/env_update.py	82.92% <0.00%> (-13.08%)	⬇️
src/garage/tf/algos/erwr.py	44.44% <0.00%> (-12.70%)	⬇️
src/garage/experiment/task_sampler.py	75.86% <0.00%> (-7.58%)	⬇️
src/garage/np/_functions.py	77.39% <0.00%> (-7.01%)	⬇️
...rage/tf/optimizers/conjugate_gradient_optimizer.py	81.90% <0.00%> (-6.57%)	⬇️
src/garage/tf/_functions.py	68.85% <0.00%> (-5.98%)	⬇️
... and 149 more

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