chore(ci): enlarge sleep startup time

Even if suboptimal as we should poll to wait for the service to be available, this should at least alleviate tests for now

Signed-off-by: Ettore Di Giacinto <mudler@users.noreply.github.com>

backend/python/qwen-tts/test.py

@@ -28,7 +28,7 @@ class TestBackendServicer(unittest.TestCase):
             stderr=subprocess.PIPE,
             text=True
         )
-        time.sleep(5)
+        time.sleep(30)
 
     def tearDown(self) -> None:
         """