Fix warning related to Node version 20

* Fix the warning below by adding

"runs:
      using: 'node20'
      main: 'main.js'"

to Setup NodeJS step

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v3, actions/setup-node@v2, aws-actions/configure-aws-credentials@v1. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

.github/workflows/frontend-s3-deploy.yml

@@ -18,6 +18,9 @@ jobs:
 
       - name: Setup NodeJS
         uses: actions/setup-node@v2
+        runs:
+          using: "node20"
+          main: "main.js"
 
       - name: Install Dependencies
         run: npm install