ci: fix ducdkb-publishing

Author: gadomski

.github/workflows/duckdb-extensions.yaml

@@ -60,12 +60,16 @@ jobs:
       attestations: write
     steps:
       - uses: actions/download-artifact@v7
+        with:
+          pattern: duckdb-extensions-*
+          path: dist
+          merge-multiple: true
       - name: Generate artifact attestation
         uses: actions/attest-build-provenance@v3
         with:
-          subject-path: "duckdb-extensions-*/*"
+          subject-path: "dist/*"
       - name: Publish to PyPI
         if: ${{ startsWith(github.ref, 'refs/tags/') }}
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
-          packages-dir: duckdb-extensions-*/
+          packages-dir: dist/