Re-update actions/download-artifact from 4 to 5

[bkoelman]

Closes #{ISSUE_NUMBER}

QUALITY CHECKLIST

• Changes implemented in code
• Complies with our contributing guidelines
• Adapted tests
• Documentation updated

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.87%. Comparing base (49511f4) to head (8b160f8).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1813   +/-   ##
=======================================
  Coverage   92.87%   92.87%           
=======================================
  Files         431      431           
  Lines       14686    14686           
  Branches     2361     2361           
=======================================
  Hits        13640    13640           
  Misses        638      638           
  Partials      408      408           

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[bkoelman]

Closing unmerged, because it's way too tricky to update to this broken version. See actions/download-artifact#419 and actions/download-artifact#426 for details.