fix push task

Author: Franco Arza

.github/workflows/npm-publish.yml

@@ -53,6 +53,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
+        with:
+          ref: ${{ github.event.release.target_commitish }}
       - uses: actions/setup-node@v1
         with:
           node-version: 12