build(deps): update Optim requirement to 2.2.1

Updates the requirements on [Optim](https://github.com/JuliaNLSolvers/Optim.jl) to permit the latest version.
- [Release notes](https://github.com/JuliaNLSolvers/Optim.jl/releases)
- [Changelog](https://github.com/JuliaNLSolvers/Optim.jl/blob/master/NEWS.md)
- [Commits](JuliaNLSolvers/Optim.jl@v0.2.0...v2.2.1)

---
updated-dependencies:
- dependency-name: Optim
  dependency-version: 2.2.1
  dependency-type: direct:production
...

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

Author: dependabot[bot]

Project.toml

@@ -17,13 +17,13 @@ TestItems = "1c621080-faea-4a02-84b6-bbd5e436b8fe"
 ForwardDiff = "1.3"
 LinearAlgebra = "1.10, 1.11, 1.12"
 NamedTrajectories = "0.8, 0.9"
+Optim = "2.2.1"
 Piccolo = "1.15"
 Reexport = "1.2"
 SpecialFunctions = "2.7"
 TestItemRunner = "1.1"
 TestItems = "1.0"
 julia = "1.10, 1.11, 1.12"
-
 [weakdeps]
 Optim = "429524aa-4258-5aef-a3af-852621145aeb"