Update deps

[matze]

Tests pass but I am not sure that the mapping from the new reader errors to UnexpectedEof are 100% identical.

[ebarnard]

Syntax looks to be pretty much equivalent to UnexpectedEof - https://docs.rs/quick-xml/latest/quick_xml/errors/enum.SyntaxError.html

IllFormed is a bit less clear, some variants do seem to be equivalent to UnexpectedEof, but some seem closer to other error types - https://docs.rs/quick-xml/latest/quick_xml/errors/enum.IllFormedError.html

The XML error types in plist's ErrorKind were built around xml-rs, so probably need a bit of a rethink.

I think it might be best to map Syntax to ErrorKind::UnexpectedEof and IllFormed to ErrorKind::InvalidXmlSyntax (confusingly) for the moment pending that rethink.

[matze]

Changed, according to your suggestion. Let me know if you have a better idea later on.