CompatHelper: bump compat for Flux to 0.16, (keep existing compat) (#29)

Co-authored-by: CompatHelper Julia <compathelper_noreply@julialang.org>

Author: github-actions[bot]

Project.toml

@@ -18,7 +18,7 @@ FluxMooncakeExt = "Mooncake"
 
 [compat]
 Compat = "4"
-Flux = "0.14.23, 0.15"
+Flux = "0.14.23, 0.15, 0.16"
 Mooncake = "0.4.42"
 NNlib = "0.9"
 Optimisers = "0.3, 0.4"