build: use action for publishing

Author: bcoe

.github/publish.yml

@@ -33,3 +33,15 @@ jobs:
           git tag -a ${{ steps.release.outputs.tag_name }}-deno -m 'chore: ${{ steps.release.outputs.tag_name }} release'
           git push origin ${{ steps.release.outputs.tag_name }}-deno
         if: ${{ steps.release.outputs.release_created }}
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 14
+          registry-url: 'https://external-dot-oss-automation.appspot.com/'
+        if: ${{ steps.release.outputs.release_created }}
+      - run: npm install
+        if: ${{ steps.release.outputs.release_created }}
+      - run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}
+        if: ${{ steps.release.outputs.release_created }}
+