tests: increase timeout in clipboard test

The point of the test is not its speed, but whether it eventually
happens. On the other hand, some of the test runners can be quite slow
under load.

qubes/tests/integ/basic.py

@@ -636,7 +636,7 @@ async def _test_clipboard(
         # correct timestamp (so gui-daemon would not drop the copy request)
         subprocess.check_call(["xdotool", "key", "ctrl+a", "ctrl+c"])
         # wait a bit to let the zenity actually copy
-        await asyncio.sleep(1)
+        await asyncio.sleep(5)
         subprocess.check_call(["xdotool", "key", "ctrl+shift+c", "Escape"])
 
         await self.wait_for_window_coro(window_title, show=False)