Use workspace inheritance for dependencies

[vmx]

Description

Cargo 1.64.0 has a new feature called workspace inheritance. You can define dependencies in your workspace and then crates within your workspace can refer to them. This way you define the version only once. This makes version upgrades way easier, while making sure all crates are on the same version.

For more information see https://doc.rust-lang.org/cargo/reference/specifying-dependencies.html#inheriting-a-dependency-from-a-workspace

Acceptance criteria

All shared dependencies are defined in the workspace and the individual crates refer to them.

Risks + pitfalls

I'm not sure how tricky it is to get everything right, given we use features and optional dependencies quite a bit. But as soon as CI is green, I'm confident that things are correct.

Where to begin

Increase the rust-toolchain version to 1.64.0. Then look at the dependencies of the crates and determine shared dependencies. Put those into the workspace and inherit their values from the crates themselves.