Report all benders gaps if reporting iterations

[manuelma]

As per title.

Checklist before merging

• Documentation is up-to-date
• Unit tests have been added/updated accordingly
• Code has been formatted according to SpineOpt's style
• Unit tests pass

[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 3 lines in your changes missing coverage. Please review.

Project coverage is 86.14%. Comparing base (3c6dfd1) to head (93589b2).
Report is 2 commits behind head on v0.7.2.x-release.

Files with missing lines	Patch %	Lines
src/run_spineopt.jl	72.72%	3 Missing ⚠️

Additional details and impacted files

@@                 Coverage Diff                  @@
##           v0.7.2.x-release    #1090      +/-   ##
====================================================
- Coverage             86.19%   86.14%   -0.06%     
====================================================
  Files                   141      141              
  Lines                  3724     3731       +7     
====================================================
+ Hits                   3210     3214       +4     
- Misses                  514      517       +3     

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