fix: exclude test files from production build

[daniel-sullivan]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 54.23%. Comparing base (b6da288) to head (20d25e2).
⚠️ Report is 4 commits behind head on master.

❌ Your project status has failed because the head coverage (54.23%) is below the target coverage (70.00%). You can increase the head coverage or adjust the target coverage.

Additional details and impacted files

@@           Coverage Diff           @@
##           master       #3   +/-   ##
=======================================
  Coverage   54.23%   54.23%           
=======================================
  Files          23       23           
  Lines        1853     1853           
  Branches       90       90           
=======================================
  Hits         1005     1005           
  Misses        820      820           
  Partials       28       28           

Flag	Coverage Δ
backend	54.23% <ø> (ø)
frontend	52.41% <ø> (ø)

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