Fix publish condition for npm-publish v4 (#159)

npm-publish v4 outputs empty string (not 'none') when version is
unchanged. The old condition != 'none' was always true, causing
Create Release to run and fail on every non-release commit.

Co-authored-by: rom1504 <rom1504@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: rom1504

.github/workflows/publish.yml

@@ -21,7 +21,7 @@ jobs:
     - id: publish
       uses: JS-DevTools/npm-publish@v4
     - name: Create Release
-      if: steps.publish.outputs.type != 'none'
+      if: ${{ steps.publish.outputs.type }}
       id: create_release
       uses: actions/create-release@v1
       env: