fix: store var global

.github/workflows/publish.yml

@@ -67,6 +67,7 @@ jobs:
         id: get_new_version
         run: |
           NEW_VERSION=$(npm view @flowgram.ai/core version --tag=latest latest)
+          echo "NEW_VERSION=$NEW_VERSION" >> $GITHUB_ENV
       - name: Create tag
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}