Allow to use newer versions of DifferentiationInterface

[pjssilva]

Hi, the current compat of the package is

              julia                    1.6
   [47edcb42] ADTypes                  1.5.3
   [a0c0ee7d] DifferentiationInterface 0.6.2
   [37e2e46d] LinearAlgebra            1.2
   [de0858da] Printf                   1.2
   [dc4f5ac2] ProximalCore             0.1

The restriction on DifferentiationInterface.jl precludes using 0.7.x ProximalOperators.jl that is required by other packages (like version 2.x). I tested ProximalAlgorithms, changing compat to

              julia                    1.6
   [47edcb42] ADTypes                  1.5.3
   [a0c0ee7d] DifferentiationInterface 0.6.2, 0.7
   [37e2e46d] LinearAlgebra            1.2
   [de0858da] Printf                   1.2
   [dc4f5ac2] ProximalCore             0.1

All tests passed. Hence, it seems possible to use 0.7.x version of DifferentiationInterface.jl. Is it possible to update the compat of ProximalAlgorithms.j to allow for the newer version of DifferentiationInterface.jl? If you prefer, I can open a pull request.

[lostella]

@pjssilva makes sense, thank you. Feel free to open a PR

[pjssilva]

Done.