Fix Firefox discovery

[amotl]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.58%. Comparing base (01dfd7c) to head (5301595).
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #47      +/-   ##
==========================================
- Coverage   94.87%   89.58%   -5.29%     
==========================================
  Files           5        3       -2     
  Lines         390      192     -198     
==========================================
- Hits          370      172     -198     
  Misses         20       20              

Flag	Coverage Δ
unittests	89.58% <ø> (-5.29%)	⬇️

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