Update to cuda 11.3

[dnth]

Update cuda 11.1 to cuda 11.3 which is installed by default on Colab.

[codecov[bot]]

Codecov Report

Merging #1113 (4a15ec8) into master (ba6a714) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1113   +/-   ##
=======================================
  Coverage   85.48%   85.48%           
=======================================
  Files         305      305           
  Lines        6675     6675           
=======================================
  Hits         5706     5706           
  Misses        969      969           

Flag	Coverage Δ
unittests	85.48% <ø> (ø)

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