switch runner to github default ones (#3123)

Author: jingxu10

.github/workflows/publish.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   build:
-    runs-on: self-hosted
+    runs-on: ubuntu-latest
     steps:
       - name: Checkout
         uses: actions/checkout@v3
@@ -74,14 +74,14 @@ jobs:
     environment:
       name: github-pages
       url: ${{steps.depolyment.outputs.page_url}}
-    runs-on: self-hosted
+    runs-on: ubuntu-latest
     needs: build
     steps:
       - name: Deploy
         uses: actions/deploy-pages@v2
 
   cleanup:
-    runs-on: self-hosted
+    runs-on: ubuntu-latest
     needs: deploy
     steps:
       - name: Cleanup