repin when using bazel modules

ever since switching from `WORKSPACE` to bazel modules, i no longer get repin warnings from rules_rust.

i do notice tho from time to time that the build from `cargo build` differs from `bazel build` and every time that happens i have to manually delete `module.bazel.lock` and run `bazel build` to recreate it.

i assume this is happening due to lack of repinning?

what is the recommended way to repin/keep bazel in sync with `cargo.lock` when using rules_rust with bazel modules.