Change on_message process method without using threads

Author: yma955

charon/pkgs/radas_signature_handler.py

@@ -64,9 +64,7 @@ def on_message(self, event: Event) -> None:
         """
         On message callback
         """
-        # handle response from radas in a thread
-        thread = threading.Thread(target=self._process_message, args=[event.message.body])
-        thread.start()
+        self._process_message(event.message.body)
 
     def on_connection_error(self, event: Event) -> None:
         """