approve after #104 - 105 step size is not passed to optimizer in modular attack

[maurapintor]

Changelog

Approve after #104

• Pass input learning rate to optimizer
• Refactor input optimizer kwargs for modular attack to be explicitly assigned to a dictionary rather than passed implicitly

Fixes #105, #106.

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📚 Documentation preview 📚: https://secml-torch--107.org.readthedocs.build/en/107/

[codecov]

Codecov Report

Attention: Patch coverage is 92.45283% with 4 lines in your changes missing coverage. Please review.

Project coverage is 90.89%. Comparing base (674b2bc) to head (3abd378).

Files with missing lines	Patch %	Lines
src/secmlt/optimization/constraints.py	91.30%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #107      +/-   ##
==========================================
+ Coverage   90.79%   90.89%   +0.10%     
==========================================
  Files          49       49              
  Lines        1314     1351      +37     
==========================================
+ Hits         1193     1228      +35     
- Misses        121      123       +2     

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[zangobot]

LGTM