feat: update node engines in package.json

BREAKING CHANGE: `npm` is now compatible with the following semver range
for node: `^14.17.0 || ^16.0.0 || >=18.0.0`

Ref: npm/statusboard#519

package.json

@@ -256,6 +256,6 @@
   },
   "license": "Artistic-2.0",
   "engines": {
-    "node": "^12.13.0 || ^14.15.0 || >=16"
+    "node": "^14.17.0 || ^16.0.0 || >=18.0.0"
   }
 }