Update Tulip.jl for LinearOperators.jl 2.0

[amontoison]

LinearOperators.jl is not based anymore on *.
It's based on 5-argument mul! now.

[codecov-commenter]

Codecov Report

Merging #99 (01832bf) into master (199b620) will decrease coverage by 0.00%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master      #99      +/-   ##
==========================================
- Coverage   90.37%   90.37%   -0.01%     
==========================================
  Files          36       36              
  Lines        2557     2555       -2     
==========================================
- Hits         2311     2309       -2     
  Misses        246      246              

Impacted Files	Coverage Δ
src/KKT/krylov.jl	90.10% <100.00%> (-0.22%)	⬇️

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