Adding a note about Node.js update (to version 18.18.2) into changelog.

Author: iamstolis

CHANGELOG.md

@@ -5,6 +5,9 @@ The main focus is on user-observable behavior of the engine.
 Changelog may include unreleased versions.
 See [release calendar](https://www.graalvm.org/release-calendar/) for release dates.
 
+## Version 23.1.2
+* Updated Node.js to version 18.18.2.
+
 ## Version 23.1.0
 * NOTE: GraalVM no longer ships with a "js" ScriptEngine. Please either use the Maven dependency or explicitly put `js-scriptengine.jar` on the module path. See [ScriptEngine documentation](docs/user/ScriptEngine.md) for details.
 * ECMAScript 2023 mode/features enabled by default.