package-binaries.yml: Add asset uploading steps for Windows

.github/workflows/package-binaries.yml

@@ -140,7 +140,11 @@ jobs:
       - uses: actions/download-artifact@v1
         with:
           name: spinalcordtoolbox-binaries_osx
-
+
+      - uses: actions/download-artifact@v1
+        with:
+          name: spinalcordtoolbox-binaries_windows
+
       - name: Upload Release Asset
         uses: actions/upload-release-asset@v1
         env:
@@ -160,3 +164,13 @@ jobs:
           asset_path: ./spinalcordtoolbox-binaries_osx/spinalcordtoolbox-binaries_osx.tar.gz
           asset_name: spinalcordtoolbox-binaries_osx.tar.gz
           asset_content_type: application/gzip
+
+      - name: Upload Release Asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }} # This pulls from the CREATE RELEASE step above, referencing it's ID to get its outputs object, which include a `upload_url`. See this blog post for more info: https://jasonet.co/posts/new-features-of-github-actions/#passing-data-to-future-steps
+          asset_path: ./spinalcordtoolbox-binaries_windows/spinalcordtoolbox-binaries_windows.tar.gz
+          asset_name: spinalcordtoolbox-binaries_windows.tar.gz
+          asset_content_type: application/gzip