change dir name

aqua-examples/decentralized-blockchain-gateway/utilities/scripts/build.sh

@@ -0,0 +1,7 @@
+#!/usr/bin/env bash -o errexit -o nounset -o pipefail
+cargo update --aggressive
+
+mkdir -p artifacts
+rm -f artifacts/*.wasm
+marine build --release
+cp target/wasm32-wasi/release/utilities.wasm artifacts/