feat: update to Node.js 16

Author: coderbyheart

.github/workflows/test-and-release.yaml

@@ -16,7 +16,7 @@ jobs:
 
       - uses: actions/setup-node@v2
         with:
-          node-version: "15.x"
+          node-version: "16.x"
 
       - name: Keep npm cache around to speed up installs
         uses: actions/cache@v2

package.json

@@ -35,7 +35,7 @@
     ]
   },
   "engines": {
-    "node": ">=14.0.0",
+    "node": ">=16.0.0",
     "npm": ">=7.0.0"
   },
   "release": {