fix(build): should use releases_created when using manifest

Author: bcoe

.github/workflows/release-please.yml

@@ -24,10 +24,10 @@ jobs:
         with:
           node-version: 14
           registry-url: 'https://external-dot-oss-automation.appspot.com/'
-        if: ${{ steps.release.outputs.release_created }}
+        if: ${{ steps.release.outputs.releases_created }}
       - run: npm install
-        if: ${{ steps.release.outputs.release_created }}
+        if: ${{ steps.release.outputs.releases_created }}
       - run: npm publish --tag=latest-15
         env:
           NODE_AUTH_TOKEN: ${{secrets.NPM_TOKEN}}
-        if: ${{ steps.release.outputs.release_created }}
+        if: ${{ steps.release.outputs.releases_created }}