ci: fix artifacts

.github/workflows/release.yml

@@ -27,23 +27,20 @@ jobs:
           path: |
             dist/numbat*.whl
             dist/*.tar.gz
-
-  upload_pypi:
-    needs: build_wheel_and_sdist
-    runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        python-version: [ "3.10", "3.11", "3.12", "3.13" ]
-    steps:
       - uses: actions/download-artifact@v4
         with:
           # unpacks default artifact into dist/
           # if `name: artifact` is omitted, the action will create extra parent dir
           name: artifact_${{ matrix.python-version }}
+          merge-multiple: true
           path: dist
 
+  upload_pypi:
+    needs: build_wheel_and_sdist
+    runs-on: ubuntu-latest
+    steps:
       - name: Publish a Python distribution to PyPI
-        uses: pypa/gh-action-pypi-publish@v1.8.2
+        uses: pypa/gh-action-pypi-publish@release/v1
         with:
           password: ${{ secrets.PYPI_DEPLOY_TOKEN }}