Fix E231 and E501 flake8 errors in CI

[rennerocha]

This PR fixes the check errors in #432 .

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (519809d) 89.46% compared to head (6215b56) 89.29%.

❗ Current head 6215b56 differs from pull request most recent head 7399bd9. Consider uploading reports for the commit 7399bd9 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #433      +/-   ##
==========================================
- Coverage   89.46%   89.29%   -0.17%     
==========================================
  Files          34       34              
  Lines        2430     2401      -29     
==========================================
- Hits         2174     2144      -30     
- Misses        256      257       +1     

Files	Coverage Δ
shub/deploy.py	90.44% <100.00%> (-0.07%)	⬇️

... and 26 files with indirect coverage changes

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[Gallaecio]

Thanks, Renne!