Update upload-pages to v3

Author: edwardalee

.github/workflows/deploy.yml

@@ -32,7 +32,7 @@ jobs:
       - name: Build website
         run: yarn build
       - name: Upload artifact
-        uses: actions/upload-pages-artifact@v2
+        uses: actions/upload-pages-artifact@v3
         with:
           path: ./build