Update iv submodule

[JCGoran]

Remove deprecation warnings (see neuronsimulator/iv#54).

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[azure-pipelines]

✔️ d1084f6 -> Azure artifacts URL

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.30%. Comparing base (afd88c2) to head (d1084f6).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3348      +/-   ##
==========================================
- Coverage   68.31%   68.30%   -0.01%     
==========================================
  Files         682      682              
  Lines      116435   116435              
==========================================
- Hits        79541    79532       -9     
- Misses      36894    36903       +9     

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