Update build.yml

.github/workflows/build.yml

@@ -261,7 +261,7 @@ jobs:
         npm prefix -g | % {npm config set node_gyp "$_\node_modules\node-gyp\bin\node-gyp.js"}
 
     - name: Build
-      shell: bash
+      shell: powershell
       run: |
         npm i -g [email protected]
         yarn --network-timeout 1000000