fix: address test data race

[LesnyRumcajs]

Summary of changes

Changes introduced in this pull request:

• this fixes a datarace in tests. It can be reproduced by running cargo test repeatedly in a loop, e.g., 50 iterations.

Reference issue to close (if applicable)

Closes

Other information and links

Change checklist

• I have performed a self-review of my own code,
• I have made corresponding changes to the documentation. All new code
  adheres to the team's
  documentation standards,
• I have added tests that prove my fix is effective or that my feature works
  (if possible),
• I have made sure the CHANGELOG is up-to-date. All user-facing changes
  should be reflected in this document.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 10.30%. Comparing base (6eeb504) to head (e7d5da5).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #119      +/-   ##
==========================================
- Coverage   10.44%   10.30%   -0.15%     
==========================================
  Files          25       25              
  Lines        1254     1252       -2     
==========================================
- Hits          131      129       -2     
  Misses       1123     1123              

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