RUSTSEC-2021-0153: encoding is unmaintained

[jayvdb]

Running osv-scanner on this repo results in only one RUSTSEC https://osv.dev/vulnerability/RUSTSEC-2021-0153

cargo-deny also fails because of this.

dicom-encoding crate includes

encoding = "0.2.33"

There is no updated version, because it is unmaintained. c.f. lifthrasiir/rust-encoding#127

This presents a problem for safety critical medical devices using that crate.

The recommended alternative is https://github.com/hsivonen/encoding_rs . Probably isnt too much effort to switch over. I can give it a go unless there are objections or other factors to be considered.

[Enet4]

Thank you for reporting. That is a known situation which is being tracked in #200. If you or someone else can do the switch to encoding_rs while keeping support for the existing text encodings and retaining compliance to the current TextCodec API, I would be very grateful. Feel free to ask questions or reach out on Zulip if you need more assistance.