Update part0a.md

Update required nodejs version to match newer one mentioned in https://fullstackopen.com/en/part3/node_js_and_express

Author: MarcGuay

src/content/0/en/part0a.md

@@ -387,7 +387,7 @@ Install a sensible text editor that supports web development. [Visual Studio Cod
 
 Don't code with nano, Notepad or Gedit. NetBeans isn't very good for web development either. It is also rather heavy in comparison to [Visual Studio Code](https://code.visualstudio.com/).
 
-Also, install [Node.js](https://nodejs.org/en/). The material has been done with version 16.13.2, so don't install any version older than that. See [Node.js installation instructions](https://nodejs.org/en/download/package-manager/).
+Also, install [Node.js](https://nodejs.org/en/). The material has been done with version 18.13.0, so don't install any version older than that. See [Node.js installation instructions](https://nodejs.org/en/download/package-manager/).
 
 Node package manager [npm](https://www.npmjs.com/get-npm) will be automatically installed with Node.js. We will be actively using npm throughout the course. Node also comes with [npx](https://www.npmjs.com/package/npx), which we'll need a few times.