Update Node support

Author: bertdeblock

.github/workflows/ci.yml

@@ -35,7 +35,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu, windows]
-        node-version: [12.x, 14.x, 16.x, 17.x, 18.x]
+        node-version: [16.x, 18.x, 20.x]
 
         # excluded because it is the `test` job above
         exclude:

README.md

@@ -18,7 +18,7 @@ error: Replace `New·Addons</h1>` with <h1>⏎New Addons⏎</h1>` (prettier/pret
 
 ## Compatibility
 
-- [Node.js](https://nodejs.org/) `^12.22.0 || ^14.17.0 || >=16.0.0`
+- [Node.js](https://nodejs.org/) `^16.0.0 || ^18.0.0 || >=20.0.0`
 - [ember-template-lint](https://github.com/ember-template-lint/ember-template-lint/) `>=4.0.0`
 - [prettier](https://prettier.io/) `>=1.18.1`
 

package.json

@@ -51,7 +51,7 @@
     "prettier": ">= 1.18.1"
   },
   "engines": {
-    "node": "^12.22.0 || ^14.17.0 || >=16.0.0"
+    "node": "^16.0.0 || ^18.0.0 || >=20.0.0"
   },
   "publishConfig": {
     "registry": "https://registry.npmjs.org"