update node version in production environment to 20

Author: mstop4

.github/workflows/main.yml

@@ -33,7 +33,7 @@ jobs:
       - name: Set up Node
         uses: actions/setup-node@v3
         with:
-          node-version: 18
+          node-version: 20
           cache: 'npm'
       - name: Install dependencies
         run: npm install