Fix Sparse.Putinar with Newton polytope

[codecov[bot]]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.05 :tada:

Comparison is base (5823575) 78.46% compared to head (eba83fc) 78.52%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #278 +/- ## ========================================== + Coverage 78.46% 78.52% +0.05% ========================================== Files 36 36 Lines 1788 1802 +14 ========================================== + Hits 1403 1415 +12 - Misses 385 387 +2 ``` | [Impacted Files](https://codecov.io/gh/jump-dev/SumOfSquares.jl/pull/278?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=jump-dev) | Coverage Δ | | |---|---|---| | [src/constraint.jl](https://codecov.io/gh/jump-dev/SumOfSquares.jl/pull/278?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=jump-dev#diff-c3JjL2NvbnN0cmFpbnQuamw=) | `75.21% <ø> (ø)` | | | [src/Certificate/Sparsity/monomial.jl](https://codecov.io/gh/jump-dev/SumOfSquares.jl/pull/278?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=jump-dev#diff-c3JjL0NlcnRpZmljYXRlL1NwYXJzaXR5L21vbm9taWFsLmps) | `98.01% <100.00%> (-1.99%)` | :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=jump-dev). 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=jump-dev)

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