Bump project Node.js version to 22

npm package-based tools are used for various development and maintenance operations for this project. In order to ensure
these operations work as expected, the project is configured for a specific major version of Node.js to be used by the
infrastructure systems and collaborators.

The standard Node.js version for Arduino Tooling projects is now 22.

Author: per1234

package-lock.json

@@ -9,6 +9,6 @@
     "prettier": "3.6.2"
   },
   "engines": {
-    "node": "16.x"
+    "node": "22.x"
   }
 }