Bump minimum required zigpy version to 0.47.0

Author: puddly

setup.cfg

@@ -15,7 +15,7 @@ python_requires = >=3.7
 install_requires =
     pyserial-asyncio; platform_system!="Windows"
     pyserial-asyncio!=0.5; platform_system=="Windows"  # 0.5 broke writes
-    zigpy>=0.40.0
+    zigpy>=0.47.0
     async_timeout
     voluptuous
     coloredlogs