Update uplo precond K2

[codecov[bot]]

Codecov Report

Base: 83.92% // Head: 83.89% // Decreases project coverage by -0.02% :warning:

Coverage data is based on head (3c2bf4d) compared to base (de2cc04). Patch coverage: 75.00% of modified lines in pull request are covered.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #234 +/- ## ========================================== - Coverage 83.92% 83.89% -0.03% ========================================== Files 47 47 Lines 3085 3092 +7 ========================================== + Hits 2589 2594 +5 - Misses 496 498 +2 ``` | [Impacted Files](https://codecov.io/gh/JuliaSmoothOptimizers/RipQP.jl/pull/234?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=JuliaSmoothOptimizers) | Coverage Δ | | |---|---|---| | [src/iterations/solvers/augmented/K2Krylov.jl](https://codecov.io/gh/JuliaSmoothOptimizers/RipQP.jl/pull/234/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=JuliaSmoothOptimizers#diff-c3JjL2l0ZXJhdGlvbnMvc29sdmVycy9hdWdtZW50ZWQvSzJLcnlsb3Yuamw=) | `85.41% <75.00%> (-0.72%)` | :arrow_down: | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=JuliaSmoothOptimizers). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=JuliaSmoothOptimizers)

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