upgrade deploy action to v4

Author: mutoo

.github/workflows/build-and-deploy.yml

@@ -28,8 +28,6 @@ jobs:
           ssh-private-key: ${{ secrets.DEPLOY_KEY }}
 
       - name: Deploy
-        uses: JamesIves/github-pages-deploy-action@3.7.1
+        uses: JamesIves/github-pages-deploy-action@v4
         with:
-          SSH: true
-          BRANCH: gh-pages # The branch the action should deploy to.
-          FOLDER: build # The folder the action should deploy.
+          folder: build # The folder the action should deploy.