feat(node-versions): dropped support for v12 since it is now EOL

BREAKING CHANGE: node v14.15 is now the lowest node version supported and v15 is also dropped

Author: travi

package.json

@@ -4,6 +4,9 @@
   "license": "MIT",
   "type": "commonjs",
   "version": "0.0.0-semantically-released",
+  "engines": {
+    "node": "^14.15 || >=16"
+  },
   "files": [
     "example.js",
     "lib/"