support Node.js v16.0.0, v19, v21

Author: legobeat

.github/workflows/nodejs.yml

@@ -11,7 +11,9 @@ jobs:
       fail-fast: false
       matrix:
         node:
+          - 16.0.0
           - 16
+          - 18.0.0
           - 18
           - 20
           # TODO: Unpin to `22` once parcel incomaptibility with 22.7+ is resolved

package.json

@@ -6,7 +6,7 @@
   "license": "MIT",
   "main": "./index.js",
   "engines": {
-    "node": "^16.20 || ^18 || ^20 || >=22"
+    "node": "16.x || >= 18.0.0"
   },
   "files": [
     "bip39/*.js",