test: use monocart to improve branch reports

[sebastijankuzner]

Summary

Checklist

• Tests (if necessary)
• Ready to be merged

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.13%. Comparing base (f516e99) to head (e61f70b).

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1392      +/-   ##
===========================================
- Coverage    66.73%   62.13%   -4.60%     
===========================================
  Files          959      931      -28     
  Lines        65081    15388   -49693     
  Branches      2579     1740     -839     
===========================================
- Hits         43429     9562   -33867     
+ Misses       21361     5819   -15542     
+ Partials       291        7     -284     

Flag	Coverage Δ
contracts	97.74% <ø> (?)
packages	61.08% <ø> (-5.65%)	⬇️

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