bump min node versions

.github/workflows/ci.yml

@@ -6,7 +6,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        node-version: [^10, ^12, ^14]
+        node-version: [^16, ^18, ^20]
         etcd-version: [v3.1.5, v3.2.4, v3.3.9]
     steps:
     - uses: actions/checkout@v1

package.json

@@ -20,6 +20,9 @@
     "type": "git",
     "url": "git+https://github.com/microsoft/etcd3.git"
   },
+  "engines": {
+    "node": ">=16"
+  },
   "nyc": {
     "reporter": [
       "text-summary",