Update Functors requirement to 0.5.2

Updates the requirements on [Functors](https://github.com/FluxML/Functors.jl) to permit the latest version.
- [Release notes](https://github.com/FluxML/Functors.jl/releases)
- [Commits](FluxML/Functors.jl@v0.1.0...v0.5.2)

---
updated-dependencies:
- dependency-name: Functors
  dependency-version: 0.5.2
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Project.toml

@@ -24,13 +24,13 @@ ChainRulesCore = "1.25.2"
 DiffOpt = "0.5.4"
 FillArrays = "1.14.0"
 Flux = "0.14.21"
+Functors = "0.5.2"
 JLD2 = "0.6.3"
 JuMP = "1.29.4"
 MathOptInterface = "1.48.0"
 ParametricOptInterface = "0.14.1"
 Zygote = "0.6.77"
 julia = "~1.9, 1.10"
-
 [extras]
 CUDA_Runtime_jll = "76a88914-d11a-5bdc-97e0-2f5a05c973a2"
 HiGHS = "87dc4568-4c63-4d18-b0c0-bb2238e4078b"