Topic/tishun/publishdocs (#3155)

* Bump to v4 of checkout

* Update upload action too

* PublishDocs bump deploy-pages action too

Author: tishun

.github/workflows/docs.yml

@@ -33,4 +33,4 @@ jobs:
           path: 'docsbuild'
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v2
+        uses: actions/deploy-pages@v4