CompatHelper: bump compat for Flux to 0.13 for package train-kernel-parameters, (keep existing compat) (#445)

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

Author: github-actions[bot]

Diff for: examples/train-kernel-parameters/Project.toml

@@ -13,7 +13,7 @@ Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 [compat]
 BenchmarkTools = "1.2"
 Distributions = "0.25"
-Flux = "0.12"
+Flux = "0.12, 0.13"
 ForwardDiff = "0.10"
 KernelFunctions = "0.10"
 Literate = "2"