Update Optim requirement from 1.7 to 1.7, 2.0 (#47)

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@v1.7.0...v2.0.0)

---
updated-dependencies:
- dependency-name: Optim
  dependency-version: 2.0.0
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Project.toml

@@ -23,7 +23,7 @@ DistributionFitsOptimExt = "Optim"
 Distributions = "0.25.102"
 FillArrays = "1"
 LinearAlgebra = "1.10"
-Optim = "1.7"
+Optim = "1.7, 2.0"
 Reexport = "1.2"
 StaticArrays = "1.2"
 Statistics = "1.10"