Add build step to publish npm workflow

Author: bryanlohxz

.github/workflows/publish-npm.yml

@@ -42,6 +42,8 @@ jobs:
           node-version: 20
       - name: Install dependencies
         run: yarn install --frozen-lockfile
+      - name: Build
+        run: yarn build
       - name: Publish to npm
         run: npm publish
         env: