Fix flaky unit test

[pvk-developer]

Resolves #512
CU-86b86bpr4

Run 1000 iterations the same test and was not failing. Before that it would fail once every 5-10 iterations. This is easier to replicate on python 3.11

[sdv-team]

Task linked: CU-86b86bpr4 Copulas - Fix flaky unit test #512

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.13%. Comparing base (3d30e40) to head (9e0272e).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #525   +/-   ##
=======================================
  Coverage   90.13%   90.13%           
=======================================
  Files          29       29           
  Lines        1824     1824           
=======================================
  Hits         1644     1644           
  Misses        180      180           

Flag	Coverage Δ
integration	79.71% <ø> (ø)
unit	86.84% <ø> (ø)

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