Use CR adjoint for logdet(::Cholesky)
#1226
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Once JuliaDiff/ChainRules.jl#613 is merged, the Zygote adjoint for
logdet(::Cholesky)can be removed. (FYI the CR PR also adds a rule fordet(::Cholesky)and hence fixes some existing issues since no such rule exists in Zygote.)Unfortunately, using this CR rule requires updating the Julia compat entry from 1.3 to 1.6. According to the RegistryCI docs a patch release may not narrow the compat range for Julia. Hence you might want to postpone this PR until the next breaking release of Zygote.