fix(playout): py39 compatibility zoneinfo import

playout/libretime_playout/recorder.py

@@ -8,7 +8,6 @@ import time
 from datetime import timezone
 from subprocess import PIPE, Popen
 from threading import Thread
-from zoneinfo import ZoneInfo
 
 import mutagen
 from libretime_api_client.v1 import ApiClient as LegacyClient
@@ -16,6 +15,12 @@ from loguru import logger
 
 from libretime_playout.config import PUSH_INTERVAL, RECORD_DIR, Config
 
+try:
+    from zoneinfo import ZoneInfo
+except ImportError:
+    from backports.zoneinfo import ZoneInfo
+
+
 # TODO : add docstrings everywhere in this module