[ci] Don't fail CI jobs if code coverage upload fails.

[ChrisCummins]

No description provided.

[codecov-commenter]

Codecov Report

Merging #444 (d85eabf) into development (4ba9a7a) will increase coverage by 0.01%.
The diff coverage is n/a.

@@               Coverage Diff               @@
##           development     #444      +/-   ##
===============================================
+ Coverage        87.36%   87.37%   +0.01%     
===============================================
  Files              104      104              
  Lines             5966     5966              
===============================================
+ Hits              5212     5213       +1     
+ Misses             754      753       -1     

Impacted Files	Coverage Δ
compiler_gym/views/observation.py	96.87% <0.00%> (-3.13%)	⬇️
compiler_gym/views/observation_space_spec.py	90.42% <0.00%> (-1.07%)	⬇️
compiler_gym/datasets/dataset.py	85.71% <0.00%> (-0.80%)	⬇️
...loop_tool/service/loop_tool_compilation_session.py	90.27% <0.00%> (+0.69%)	⬆️
compiler_gym/service/connection.py	77.58% <0.00%> (+1.03%)	⬆️

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