ci: use correct event_name property (#284)

Author: austince

.github/workflows/ci.yml

@@ -40,7 +40,7 @@ jobs:
           node-version: 12
           registry-url: https://registry.npmjs.org/
       - run: npm run release
-        if: ${{ github.event == 'push' }}
+        if: ${{ github.event_name == 'push' }}
         env:
           NPM_TOKEN: ${{secrets.NPM_TOKEN}} # f674......69f0
           GITHUB_TOKEN: ${{secrets.github_token}}