fix: NPM packages cannot be published

in #356 it was mentioned, that the upload did not
work.
First issue seems to be, that the package.json cannot
be found. The root cause seems to be, that the
working directory is not correct.

This should work

.github/workflows/publish_npm.yml

@@ -39,4 +39,5 @@ jobs:
         env:
           NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
         run: npm publish
+        working-directory: ./bdist/js
         if: ${{ env.NODE_AUTH_TOKEN != '' }}