use scientific-python action to upload to ananconda.org

Author: mattip

.github/workflows/posix.yml

@@ -123,22 +123,8 @@ jobs:
         name: wheels-${{ matrix.os }}-${{ matrix.PLAT }}-${{ matrix.INTERFACE64 }}-${{ matrix.MB_ML_LIBC }}-${{ matrix.MB_ML_VER }}
         path: dist/scipy_openblas*.whl
 
-
-    - uses: conda-incubator/setup-miniconda@v4.0.1
+    - name: Upload to ananconda.org
+      uses: scientific-python/upload-nightly-action@0.6.4
       with:
-        channels: conda-forge
-        channel-priority: true
-        activate-environment: upload
-        miniforge-version: latest
-        conda-remove-defaults: "true"
-
-    - name: Upload
-      # see https://github.com/marketplace/actions/setup-miniconda for why
-      # `-el {0}` is required.
-      shell: bash -el {0}
-      env:
-        ANACONDA_SCIENTIFIC_PYTHON_UPLOAD: ${{ secrets.ANACONDA_SCIENTIFIC_PYTHON_UPLOAD }}
-      run: |
-        conda install -y anaconda-client
-        source tools/upload_to_anaconda_staging.sh
-        upload_wheels
+        artifacts_path: dist
+        anaconda_nightly_upload_token: ${{ secrets.ANACONDA_SCIENTIFIC_PYTHON_UPLOAD }}