Set to v0.54.2 release-version

Author: bouwew

custom_components/plugwise/manifest.json

@@ -8,6 +8,6 @@
   "iot_class": "local_polling",
   "loggers": ["plugwise"],
   "requirements": ["plugwise==1.5.1"],
-  "version": "0.54.2a0",
+  "version": "0.54.2",
   "zeroconf": ["_plugwise._tcp.local."]
 }