Fix artifact download url construction

[sikmir]

Resolves #660

[codecov]

Codecov Report

Base: 37.98% // Head: 37.98% // No change to project coverage 👍

Coverage data is based on head (cb4c34c) compared to base (c604484).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #750   +/-   ##
=======================================
  Coverage   37.98%   37.98%           
=======================================
  Files          13       13           
  Lines         416      416           
=======================================
  Hits          158      158           
  Misses        246      246           
  Partials       12       12           

Flag	Coverage Δ
unittests	37.98% <ø> (ø)

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[LinuxSuRen]

hi @sikmir , thanks for the fixing. I'll test this PR as soon as possible. Those e2e tests might be outdated. Please ignore them.