Fix Float32

[DanielVandH]

This together with JuliaGeometry/DelaunayTriangulation.jl#61 will hopefully deal with the bug here JuliaGeo/GeometryOps.jl#9 (comment)

[codecov]

Codecov Report

Patch coverage: 98.18% and project coverage change: -0.10 ⚠️

Comparison is base (2e5993d) 98.61% compared to head (65fb4fc) 98.52%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main       #8      +/-   ##
==========================================
- Coverage   98.61%   98.52%   -0.10%     
==========================================
  Files          19       19              
  Lines         793      811      +18     
==========================================
+ Hits          782      799      +17     
- Misses         11       12       +1     

Impacted Files	Coverage Δ
src/NaturalNeighbours.jl	100.00% <ø> (ø)
src/interpolation/utils.jl	98.71% <90.90%> (-1.29%)	⬇️
src/differentiation/differentiate.jl	98.70% <100.00%> (+0.03%)	⬆️
src/interpolation/coordinates/laplace.jl	100.00% <100.00%> (ø)
src/interpolation/coordinates/sibson.jl	100.00% <100.00%> (ø)
src/interpolation/extrapolation.jl	100.00% <100.00%> (ø)
src/interpolation/interpolate.jl	98.90% <100.00%> (+0.06%)	⬆️
src/utils.jl	100.00% <100.00%> (ø)

... and 2 files with indirect coverage changes

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