Update DifferentiationInterface requirement to 0.7.14 in /docs (#205)

Updates the requirements on [DifferentiationInterface](https://github.com/JuliaDiff/DifferentiationInterface.jl) to permit the latest version.
- [Release notes](https://github.com/JuliaDiff/DifferentiationInterface.jl/releases)
- [Commits](JuliaDiff/DifferentiationInterface.jl@DifferentiationInterface-v0.1.0...DifferentiationInterface-v0.7.14)

---
updated-dependencies:
- dependency-name: DifferentiationInterface
  dependency-version: 0.7.14
  dependency-type: direct:production
...

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docs/Project.toml

@@ -17,6 +17,7 @@ Zygote = "e88e6eb3-aa80-5325-afca-941959d7151f"
 [compat]
 ADTypes = "1.21.0"
 ComponentArrays = "0.15.31"
+DifferentiationInterface = "0.7.14"
 Documenter = "1.3"
 ForwardDiff = "1.3.1"
 ImplicitDifferentiation = "0.9.1"