MISC: Add a script to update all dependencies in rust workspaces

utils/scripts/update-cargo-deps.bash

+#!/bin/sh
+
+set -e
+_ROOT="$(git rev-parse --show-toplevel)"
+
+for project in amadeus-next amadeus-rs liblektor-rs
+do
+    cd "$_ROOT/src/rust/$project"
+    cargo update
+done