* Improve typing of deCONZ diagnostics
homeassistant/components/deconz/diagnostics.py:28: error: Item "None" of "Optional[WSClient]" has no attribute "state" [union-attr]
homeassistant/components/deconz/diagnostics.py:40: error: Unpacking a string is disallowed [misc]
homeassistant/components/deconz/diagnostics.py:40: error: Cannot determine type of "k" [has-type]
homeassistant/components/deconz/diagnostics.py:40: error: Cannot determine type of "v" [has-type]
homeassistant/components/deconz/diagnostics.py:42: error: Unpacking a string is disallowed [misc]
homeassistant/components/deconz/diagnostics.py:42: error: Cannot determine type of "k" [has-type]
homeassistant/components/deconz/diagnostics.py:42: error: Cannot determine type of "v" [has-type]
* Fix review comments
* These mypy ignores arent useful until py.typed is introduced with the library which I will do once I resolve as much as possible in the integration