build: bump required version to Node >= 20

The build script requires features that are only included in Node 20+

Author: wolfy1339

package-lock.json

@@ -33,7 +33,7 @@
     "semantic-release-plugin-update-version-in-files": "^1.1.0"
   },
   "engines": {
-    "node": ">=16"
+    "node": ">=20"
   },
   "release": {
     "branches": [