fix cd

.github/workflows/cd.yml

@@ -68,6 +68,7 @@ jobs:
       with:
         path: dist
     - name: Flatten dist dir
+      shell: bash
       run: |
           find dist -mindepth 2 -type f -exec mv -f '{}' dist/ ';'
           rm -rf dist/*/
@@ -88,6 +89,7 @@ jobs:
       run: |
           rm -rf ./wgpu
           rm -rf ./dist/*.whl
+          # Install sdist, but no test, because there is no wgpu-native lib now.
           filename=$(ls dist/*.tar.gz)
           pip install $filename
           pip uninstall -y wgpu