Aqua: enable ambiguities

[jonschumacher]

See

MPISphericalHarmonics.jl/test/runtests.jl

Line 10 in e388f15

Aqua.test_all(MPISphericalHarmonics, ambiguities=false)

[jonschumacher]

Fails due to errors in these external libraries:

• ForwardDiff causes many ambiguities which may hurt performance JuliaDiff/ForwardDiff.jl#597
• https://github.com/JuliaAlgebra/MultivariatePolynomials.jl
• https://github.com/JuliaIO/TranscodingStreams.jl
• https://github.com/JuliaAlgebra/StaticPolynomials.jl
• https://github.com/JuliaPlots/MakieCore.jl

Probably https://github.com/hofmannmartin/SphericalHarmonicExpansions.jl has to be updated as well.

[jonschumacher]

JuliaDiff/ForwardDiff.jl#681 -> JuliaDiff/ForwardDiff.jl#662 could resolve tthe issues with ForwardDiff in the future.