Switch Node versioning to engines

.node-version

@@ -1 +0,0 @@
-18.16.0

README.md

@@ -31,9 +31,10 @@ need to perform some initial setup steps before you can develop your action.
 >
 > You'll need to have a reasonably modern version of
 > [Node.js](https://nodejs.org) handy. If you are using a version manager like
-> [`nodenv`](https://github.com/nodenv/nodenv), you can run `nodenv install` in
-> the root of your repository to install the version specified in
-> [`.node-version`](.node-version). Otherwise, 16.x or later should work!
+> [`nodenv`](https://github.com/nodenv/nodenv) or
+> [`nvm`](https://github.com/nvm-sh/nvm), you can run `nodenv install` in the
+> root of your repository to install the version specified in
+> [`package.json`](./package.json). Otherwise, 16.x or later should work!
 
 1. :hammer_and_wrench: Install the dependencies
 

package-lock.json

@@ -29,6 +29,9 @@
         "prettier-eslint": "^15.0.1",
         "ts-jest": "^29.1.1",
         "typescript": "^5.1.6"
+      },
+      "engines": {
+        "node": ">=16"
       }
     },
     "node_modules/@aashutoshrathi/word-wrap": {

package.json

@@ -18,6 +18,9 @@
     "setup"
   ],
   "main": "dist/index.js",
+  "engines": {
+    "node": ">=16"
+  },
   "scripts": {
     "bundle": "npm run format:write && npm run package",
     "ci-test": "jest",