chore: drop support for Node 16 (#159)

Author: fabnguess

.github/workflows/main.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        node-version: [16.x, 18.x]
+        node-version: [18.x, 20.x]
       fail-fast: false
     steps:
       - name: Harden Runner

README.md

@@ -21,7 +21,7 @@ NodeSecure runtime configuration.
 
 ## Requirements
 
-- [Node.js](https://nodejs.org/en/) v16 or higher
+- [Node.js](https://nodejs.org/en/) v18 or higher
 
 ## Getting Started
 

package.json

@@ -6,7 +6,7 @@
   "type": "module",
   "types": "./dist/index.d.ts",
   "engines": {
-    "node": ">=16"
+    "node": ">=18"
   },
   "scripts": {
     "build": "tsc",