Update Node.js version from 16 to 18

Author: geofranzi

.github/workflows/main.yml

@@ -17,7 +17,7 @@ jobs:
       - name: Setup Node
         uses: actions/setup-node@v2
         with:
-          node-version: '16'
+          node-version: '18'
 
       - name: Cache pnpm modules
         uses: actions/cache@v3