Fix broken GH deploy workflow (#37)

Author: roger2hk

.github/workflows/main.yml

@@ -22,7 +22,7 @@ on:
 
 jobs:
   deploy:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     concurrency:
       group: ${{ github.workflow }}-${{ github.ref }}
     steps: