CI: Use scientific-python/upload-nightly-action for nightly wheels

Author: mroeschke

.github/workflows/wheels.yml

@@ -45,7 +45,6 @@ jobs:
       (github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v') && ( ! endsWith(github.ref, 'dev0')))
     runs-on: ubuntu-24.04
     env:
-      IS_PUSH: ${{ github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v') }}
       IS_SCHEDULE_DISPATCH: ${{ github.event_name == 'schedule' || github.event_name == 'workflow_dispatch' }}
     outputs:
       sdist_file: ${{ steps.save-path.outputs.sdist_name }}
@@ -118,7 +117,6 @@ jobs:
             python: ["cp313t", "3.13"]
 
     env:
-      IS_PUSH: ${{ github.event_name == 'push' && startsWith(github.ref, 'refs/tags/v') }}
       IS_SCHEDULE_DISPATCH: ${{ github.event_name == 'schedule' || github.event_name == 'workflow_dispatch' }}
     steps:
       - name: Checkout pandas
@@ -204,18 +202,11 @@ jobs:
           path: ./wheelhouse/*.whl
 
       - name: Upload wheels & sdist
-        if: ${{ success() && (env.IS_SCHEDULE_DISPATCH == 'true' || env.IS_PUSH == 'true') }}
-        shell: bash -el {0}
-        env:
-          PANDAS_NIGHTLY_UPLOAD_TOKEN: ${{ secrets.PANDAS_NIGHTLY_UPLOAD_TOKEN }}
-        # trigger an upload to
-        # https://anaconda.org/scientific-python-nightly-wheels/pandas
-        # for cron jobs or "Run workflow" (restricted to main branch).
-        # The tokens were originally generated at anaconda.org
-        run: |
-          source ci/upload_wheels.sh
-          set_upload_vars
-          upload_wheels
+        if: ${{ success() && env.IS_SCHEDULE_DISPATCH == 'true' }}
+        uses: scientific-python/upload-nightly-action@0.6.2
+        with:
+          artifacts_path: dist
+          anaconda_nightly_upload_token: ${{secrets.PANDAS_NIGHTLY_UPLOAD_TOKEN}}
 
   publish:
     if: >