fixup! ci(ui-tests): take a screenshot when canceled

Author: dscho

.github/workflows/ui-tests.yml

@@ -129,7 +129,7 @@ jobs:
       - name: Take screenshot, if canceled
         id: take-screenshot
         if: always()
-        shell: pwsh
+        shell: powershell
         run: |
           Add-Type -TypeDefinition @"
           using System;