Update package.json

replace mv pkg with out-dir

js/package.json

@@ -10,7 +10,7 @@
   "scripts": {
     "fmt": "rome format . --write && rome check . --apply-unsafe",
     "test": "rome ci . && wasm-pack build --debug --target nodejs && mocha",
-    "build": "rm -rf pkg && wasm-pack build --release --target web --out-name web && mv pkg pkg-web && wasm-pack build --release --target nodejs --out-name node && mv pkg pkg-node && node build_package.js && rm -r pkg-web && rm -r pkg-node",
+    "build": "rm -rf pkg && wasm-pack build --release --target web --out-name web --out-dir pkg-web && wasm-pack build --release --target nodejs --out-name node --out-dir pkg-node && node build_package.js && rm -r pkg-web && rm -r pkg-node",
     "release": "npm run build && npm publish ./pkg",
     "pack": "npm run build && npm pack ./pkg"
   },