cargo: fix github action?

Signed-off-by: Joseph Mattello <mail@joemattiello.com>

Dependencies/update.sh

@@ -0,0 +1,10 @@
+#!/usr/bin/env bash 
+set -e; set -o pipefail; set -x;
+
+echo "Building Rust projects..."
+cd em_proxy
+cargo xcode --output-dir ../
+cd ../
+cd minimuxer
+cargo xcode --output-dir ../
+echo "Done!"