fixup! ci: add an AutoHotKey-based integration test

Author: dscho

.github/workflows/ui-tests.yml

@@ -80,7 +80,7 @@ jobs:
       - name: Run UI tests
         id: ui-tests
         run: |
-          $p = Start-Process -Wait -FilePath C:\a\_temp\ahk\AutoHotKey64.exe -ArgumentList ui-tests\background-hook.ahk, "$PWD\bg-hook"
+          $p = Start-Process -Wait -FilePath "${env:RUNNER_TEMP}\ahk\AutoHotKey64.exe -ArgumentList ui-tests\background-hook.ahk, "$PWD\bg-hook"
           if ($p.ExitCode -ne 0) { echo "::error::Test failed!" } else { echo "::notice::Test log" }
           type bg-hook.log
           if ($p.ExitCode -ne 0) { exit 1 }