Update deploy-preview.yml

Author: sserrata

.github/workflows/deploy-preview.yml

@@ -66,7 +66,7 @@ jobs:
       - name: Build site
         run: yarn build-demo
 
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v3
         with:
           name: build-dir
           path: demo/build/
@@ -80,7 +80,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v2
 
-      - uses: actions/download-artifact@v2
+      - uses: actions/download-artifact@v3
         with:
           name: build-dir
           path: demo/build/