Set daemon attribute instead of using setDaemon method that was deprecated in Python 3.10 (#2033)

* Set daemon attribute instead of using setDaemon method that was deprecated in Python 3.10

* Add myself to contributors.

Author: tirkarthi

CONTRIBUTORS

@@ -59,6 +59,7 @@ Joshua Hesketh
 Julian Krause
 Jürgen Gmach
 Jurko Gospodnetić
+Karthikeyan Singaravelan
 Krisztian Fekete
 Laszlo Vasko
 Lukasz Balcerzak

src/tox/util/spinner.py

@@ -84,7 +84,7 @@ def __enter__(self):
         self.render_frame()
         self._stop_spinner = threading.Event()
         self._spinner_thread = threading.Thread(target=self.render)
-        self._spinner_thread.setDaemon(True)
+        self._spinner_thread.daemon = True
         self._spinner_thread.start()
         return self