add "engines" field

Author: gfx

package.json

@@ -2,6 +2,8 @@
   "name": "@msgpack/msgpack",
   "version": "1.3.2",
   "description": "MessagePack for JavaScript/ECMA-262",
+  "author": "The MessagePack community",
+  "license": "ISC",
   "main": "./dist/index.js",
   "browser": "./dist.es5/msgpack.js",
   "types": "./dist/index.d.ts",
@@ -36,22 +38,23 @@
     "asbuild:production": "asc assembly/index.ts -b dist/wasm/msgpack.wasm -t dist/wasm/msgpack.wat --sourceMap --validate -O3 && ts-node tools/pack-wasm.ts",
     "update-dependencies": "rimraf node_modules/ package-lock.json && npm install && npm dedupe"
   },
+  "homepage": "https://msgpack.org/",
   "repository": {
     "type": "git",
     "url": "https://github.com/msgpack/msgpack-javascript.git"
   },
+  "bugs": {
+    "url": "https://github.com/msgpack/msgpack-javascript/issues"
+  },
   "keywords": [
     "msgpack",
     "MessagePack",
     "serialization",
     "universal"
   ],
-  "author": "The MessagePack community",
-  "license": "ISC",
-  "bugs": {
-    "url": "https://github.com/msgpack/msgpack-javascript/issues"
+  "engines": {
+    "node": ">= 10"
   },
-  "homepage": "https://msgpack.org/",
   "devDependencies": {
     "@bitjourney/check-es-version-webpack-plugin": "^1.0.2",
     "@types/base64-js": "^1.2.5",