Merge pull request #17 from paritytech/yuri/upgrade-actions

Actions upgrade; v3 is deprecated

Author: mutantcornholio

.github/workflows/npm-release.yml

@@ -32,7 +32,7 @@ jobs:
       - name: npm pack
         run: cd dist && npm pack
 
-      - uses: actions/upload-artifact@v3
+      - uses: actions/upload-artifact@v4
         with:
           name: package
           path: "dist/create-polkadot-dapp-*.tgz"