Update demo-ci.yml

Author: wenbinf

.github/workflows/demo-ci.yml

@@ -9,15 +9,15 @@ on:
 jobs:
   build:
 
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     strategy:
       fail-fast: false
       matrix:
         python-version: ["3.10"]
         node-version: [16.x]
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - name: Install javascript dependencies
       uses: borales/actions-yarn@v3.0.0
       with: