In the Rust ecosystem, you only publish lock files for binary crates. So yeah then you get churn like https://github.com/cargo-bins/cargo-binstall/releases/tag/v1... bumping transitive deps, but this churn/noise doesn't exist for library crates - because the lock file isn't published for them.
That Cargo.lock will only be used for the library's own CI though (and also for development if you git clone it). It will not be used by downstream dependencies at all.