Update Node.js version from 20 to 24 for develop (#134)

Author: Gared

.github/workflows/e2e-test.yml

@@ -237,7 +237,7 @@ jobs:
         path: etherpad
     - uses: actions/setup-node@v6
       with:
-        node-version: 20
+        node-version: 24
     - uses: JarvusInnovations/background-action@v1
       name: Start etherpad service
       with: