CompatHelper: bump compat for "Flux" to "0.12" (#514)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

Project.toml

@@ -36,7 +36,7 @@ DiffEqSensitivity = "6.19"
 DiffResults = "1.0"
 Distributions = "0.23, 0.24"
 DistributionsAD = "0.6"
-Flux = "0.11.0"
+Flux = "0.11.0, 0.12"
 ForwardDiff = "0.10"
 GalacticOptim = "1"
 LoggingExtras = "0.4"