.github/workflows: Add generate-test-packages trigger.

.github/workflows: Add generate-test-packages trigger.

1.6.3

1.6.0

Make canceling from the pkexec dialog more robust.

If the user aborts a format or write operation by clicking cancel
in the pkexec dialog, just close that dialog, but keep the mintstick
window usable so the user can try again without having to restart
the program.