chore: make logs artifacts unique per matrix job

[rix0rrr]

We used to try to upload all logs under the same artifact name, but we need to make them explicitly unique per matrix job otherwise the names collide.

Also include a link to the artifact name in the summary, just for kicks.

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[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 80.02%. Comparing base (f12ec97) to head (9f05367).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #426      +/-   ##
==========================================
- Coverage   80.27%   80.02%   -0.25%     
==========================================
  Files          66       66              
  Lines        6894     6894              
  Branches      790      786       -4     
==========================================
- Hits         5534     5517      -17     
- Misses       1340     1356      +16     
- Partials       20       21       +1     

Flag	Coverage Δ
suite.unit	80.02% <ø> (-0.25%)	⬇️

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