👷 ci(workflows): update release drafter to conditionally publish

- add dynamic publish flag based on build output
- use `needs.build.outputs.is_release` to control release publication
- ensure release is only published when release conditions are met

.github/workflows/publish-to-pypi.yml

@@ -124,7 +124,7 @@ jobs:
       - name: Publish the release notes
         uses: release-drafter/[email protected]
         with:
-          publish: true
+          publish: ${{ needs.build.outputs.is_release != '' }}
           tag: ${{ needs.build.outputs.is_release }}
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}