Remove attestations for PyPI publishing

Author: daneah

.github/workflows/packaging.yml

@@ -48,10 +48,13 @@ jobs:
       - name: Publish distribution to Test PyPI
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
-          repository_url: https://test.pypi.org/legacy/
+          repository-url: https://test.pypi.org/legacy/
+          attestations: false
 
       - name: Publish distribution to PyPI
         uses: pypa/gh-action-pypi-publish@release/v1
+        with:
+          attestations: false
 
       - name: Publish distribution to GitHub release
         uses: softprops/action-gh-release@v2