Migrate away from deprecated actions/upload-artifact@v2

Author: PowerKiKi

.github/workflows/main.yml

@@ -13,7 +13,7 @@ jobs:
                   cache: 'yarn'
             - run: yarn --frozen-lockfile
             - run: yarn build-demo
-            - uses: actions/upload-artifact@v2
+            - uses: actions/upload-artifact@v3
               with:
                   name: dist
                   path: dist/