ci: trigger workflow during release

.github/workflows/release.yml

@@ -47,3 +47,11 @@ jobs:
           POETRY_PYPI_TOKEN_PYPI: ${{ secrets.PYPI_API_TOKEN }}
         run: |
           poetry publish
+
+      - name: Trigger build and push on langchain-serve
+        uses: peter-evans/repository-dispatch@v2
+        with:
+          token: ${{ secrets.DEEPANKAR_GITHUB_TOKEN }} # TODO: repo authors need to create a PAT and add it to secrets
+          repository: jina-ai/langchain-serve
+          event-type: langflow-push
+          client-payload: '{"push_token": "${{ secrets.LCSERVE_PUSH_TOKEN }}", "branch": "dev"}' # TODO: repo authors need to store `LCSERVE_PUSH_TOKEN` in secrets