build(appimage): upgrade to Python 3.8.18

[tiborsimko]

Fixes AppImage building procedure by upgrading to Python 3.8.18.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (fe0b00a) 58.62% compared to head (783c17a) 58.62%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #704   +/-   ##
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  Coverage   58.62%   58.62%           
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  Files          24       24           
  Lines        2393     2393           
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  Hits         1403     1403           
  Misses        990      990           

[giuseppe-steduto]

LGTM!
A small note: I had to run the script as superuser in order to have the permission to complete the AppImage build process successfully. Is this intended behavior?

[tiborsimko]

had to run the script as superuser in order to have the permission to complete the AppImage build process successfully. Is this intended behavior?

Hmm, I'm running it as a regular use. Perhaps we can see IRL about the troubles you've met?

[tiborsimko]

Hmm, I'm running it as a regular use. Perhaps we can see IRL about the troubles you've met?

I managed to reproduce a runtime error: it happens when I launch this script whilst being in the reana virtual environment. However, when you deactivate first, and use the vanilla operating system Python, then the script runs fine. Perhaps you tried it out whilst being in the reana venv?

[mdonadoni]

Works well after the latest changes (outside the reana venv)