fix: update actions yml file 2

Author: chopsueey

.github/workflows/main_webapptest12.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Set up Node.js version
         uses: actions/setup-node@v4
         with:
-          node-version: '20.x' # Node 24 is very new; LTS (20 or 22) is highly recommended for Azure stability
+          node-version: '24.x' # Node 24 is very new; LTS (20 or 22) is highly recommended for Azure stability
 
       # Next.js requires environment variables to be present during the build step
       - name: npm install, build, and test