Avoid powershell on Windows

Author: nex3

.github/workflows/ci.yml

@@ -134,6 +134,7 @@ jobs:
         run: |
           npm run compile
           ln -s {`pwd`/,dist/}lib/src/vendor/dart-sass-embedded
+        shell: bash
         working-directory: embedded-host-node
 
       - name: Run tests