Update denonavr to 1.2.0 (home-assistant#155385)

Author: ol-iver

homeassistant/components/denonavr/manifest.json

@@ -6,7 +6,7 @@
   "documentation": "https://www.home-assistant.io/integrations/denonavr",
   "iot_class": "local_push",
   "loggers": ["denonavr"],
-  "requirements": ["denonavr==1.1.2"],
+  "requirements": ["denonavr==1.2.0"],
   "ssdp": [
     {
       "deviceType": "urn:schemas-upnp-org:device:MediaRenderer:1",

homeassistant/components/denonavr/media_player.py

@@ -274,7 +274,7 @@ def __init__(
             and MediaPlayerEntityFeature.SELECT_SOUND_MODE
         )
 
-    async def _telnet_callback(self, zone: str, event: str, parameter: str) -> None:
+    def _telnet_callback(self, zone: str, event: str, parameter: str) -> None:
         """Process a telnet command callback."""
         # There are multiple checks implemented which reduce unnecessary updates of the ha state machine
         if zone not in (self._receiver.zone, ALL_ZONES):