Update versions in docs to remove explicit versions

[mike-solomon]

Throughout our docs we provide many explicit versions for libraries. It's nearly impossible to ensure they're all up-to-date given GitBooks limitations. We should update the docs to use LATEST or latest.release throughout.

Here's an example of this: https://github.com/moderneinc/rewrite-recipe-starter/blob/3ade0712960bd4a31641e85b97653a75a9025354/build.gradle.kts