chore: Update Python setup and enhance publishing workflow (hiero-ledger#2168)

Signed-off-by: Ntege Daniel <danientege785@gmail.com>

Author: danielmarv

.github/workflows/publish.yml

@@ -87,9 +87,16 @@ jobs:
           verify-cert-identity: https://github.com/${{ github.repository }}/.github/workflows/publish.yml@refs/tags/${{ github.ref_name }}
           verify-oidc-issuer: https://token.actions.githubusercontent.com
 
+      - name: Prepare distributions for PyPI upload
+        run: |
+          mkdir -p publish-dist
+          cp dist/*.whl publish-dist/
+          cp dist/*.tar.gz publish-dist/
+
       - name: Publish to PyPI
         uses: pypa/gh-action-pypi-publish@cef221092ed1bacb1cc03d23a2d87d1d172e277b # release/v1
         with:
+          packages-dir: publish-dist
           skip-existing: true
 
       - name: Upload signed assets to GitHub Release