The `device` Key is Technically Optional

[emorydunn]

In doing some tests on a laptop that hasn't had a Stream Deck connected I'm getting a decoding error:

09:34:10.3280 Failed to decode data for event titleParametersDidChange
09:34:10.3282 The data couldn’t be read because it is missing.
09:34:10.3288 keyNotFound(CodingKeys(stringValue: "device", intValue: nil), Swift.DecodingError.Context(codingPath: [], debugDescription: "No value associated with key CodingKeys(stringValue: \"device\", intValue: nil) (\"device\").", underlyingError: nil))

Admittedly this is kind of an unusual case.