Version conflict with JuliaFormatter

[patrickersing]

After the update of the compat bound of DataStructures to v0.19 in https://github.com/trixi-framework/Trixi.jl/pull/2865/changes#diff-72ed386c2a0cd1d23c0968297e70023ed98c22490d146dd89fc91f48369bad4dL78, there is a version conflict with JuliaFormatter.jl v1.0.60, which only support DataStructures up to v0.18.

This only affects development, but since this is the version that we use for the formatting, it is convenient to install both Trixi and JuliaFormatter in the same project.

[patrickersing]

@DanielDoehring Is it possible to just lower the compat bound back to DataStructures = "0.18.15, 0.19" again or do the changes in the PR require DataStructures = "0.19"?

[JoshuaLampert]

Using DataStructures = "0.18.15, 0.19" would probably break Downgrade again. But I think we can simply revert #2865 because it did not fix the issue #2885 and would avoid that the test project unnecessarily depends on OrdinaryDiffEqDifferentiation.jl.

[DanielDoehring]

Using DataStructures = "0.18.15, 0.19" would probably break Downgrade again. But I think we can simply revert #2865 because it did not fix the issue #2885 and would avoid that the test project unnecessarily depends on OrdinaryDiffEqDifferentiation.jl.

Yes, I think we should do that.

[patrickersing]

Sounds good, I can open a PR for that