chore: set default workdir in untrusted devenv shell

Author: Dragory

open-untrusted-devenv.sh

@@ -4,4 +4,5 @@ set -eou pipefail
 docker compose -f ./docker-compose.development.yml run \
     --quiet \
     --rm \
+    -w /workspace/zeppelin \
     untrusted /bin/bash