Bump version in preperation for next release.

Anko fan has some issues still, but either these issues are easily solved
soon, or will benefit from a bigger audience and the first user having the
actual release in case their local copy is not quite in sync and that is
the cause of the issue (it does not appear so though, as tuya-cli is also
failing for them).

custom_components/tuya_local/manifest.json

@@ -2,7 +2,7 @@
     "domain": "tuya_local",
     "iot_class": "local_polling",
     "name": "Tuya based devices local control",
-    "version": "0.7.2", 
+    "version": "0.7.3", 
     "documentation": "https://github.com/make-all/tuya-local",
     "issue_tracker": "https://github.com/make-all/tuya-local/issues",
     "dependencies": [],