🩹 patch CI failure due to unconditional Qiskit deprecation warning

[burgholzer]

Description

Fixes CI. The newest Qiskit version introduced a new deprecation warning for some version attribute and, for some reason, that warning trips up pytest without our code actually using the deprecated attribute.

Checklist:

• The pull request only contains commits that are related to it.
• I have added appropriate tests and documentation.
• I have made sure that all CI jobs on GitHub pass.
• The pull request introduces no new warnings and follows the project's style guidelines.

[codecov]

Codecov Report

Merging #297 (262499a) into main (7177f1a) will increase coverage by 0.1%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##            main    #297     +/-   ##
=======================================
+ Coverage   95.9%   96.1%   +0.1%     
=======================================
  Files         34      34             
  Lines       1722    1720      -2     
  Branches     208     208             
=======================================
+ Hits        1653    1654      +1     
+ Misses        69      66      -3     

Flag	Coverage Δ
cpp	95.8% <ø> (+0.2%)	⬆️
python	97.1% <ø> (ø)

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see 3 files with indirect coverage changes