move to node.js 20

Author: fturmel

.github/workflows/node.js.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Use Node.js ${{ matrix.node-version }}
         uses: actions/setup-node@v3
         with:
-          node-version: '18.x'
+          node-version: '20.x'
           cache: 'npm'
       - run: npm ci
       - run: npm test

.nvmrc

@@ -1 +1 @@
-18
+20

CONTRIBUTING.md

@@ -49,4 +49,4 @@ To find an issue that you want to fix, scan through the list. You may find that
 
 ### Development Environment
 
-Make sure you have Node.js version `18.x` as well as npm installed. You can find how to test your changes locally [here](https://github.com/CodingTrain/thecodingtrain.com#development-info).
+Make sure you have Node.js version `20.x` as well as npm installed. You can find how to test your changes locally [here](https://github.com/CodingTrain/thecodingtrain.com#development-info).

README.md

@@ -17,7 +17,7 @@ This repo holds the website for [thecodingtrain.com](https://thecodingtrain.com/
 
 ## Development info
 
-When updating the website, it is helpful to run the website locally in order to quickly see the changes made. Make sure you have Node.js version `18.x` installed and then perform the following steps:
+When updating the website, it is helpful to run the website locally in order to quickly see the changes made. Make sure you have Node.js version `20.x` installed and then perform the following steps:
 
 1. Clone down the repo to your computer and `cd` into the folder
 2. Run `npm install`