test(crypto-commit): increase unit tests coverage

[sebastijankuzner]

Summary

Checklist

• Documentation (if necessary)
• Tests (if necessary)
• Ready to be merged

[codecov]

Codecov Report

❌ Patch coverage is 91.54930% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 53.53%. Comparing base (40bae42) to head (3653af2).
⚠️ Report is 1 commits behind head on develop.

Files with missing lines	Patch %	Lines
packages/exceptions/source/crypto.ts	0.00%	6 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1252      +/-   ##
===========================================
+ Coverage    53.05%   53.53%   +0.47%     
===========================================
  Files         1124     1128       +4     
  Lines        62677    63167     +490     
  Branches      1720     1803      +83     
===========================================
+ Hits         33254    33817     +563     
+ Misses       29292    29217      -75     
- Partials       131      133       +2     

Flag	Coverage Δ
contracts	98.60% <ø> (?)
packages	53.22% <91.54%> (+0.17%)	⬆️

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