RUSTSEC-2021-0127: serde_cbor is unmaintained

[github-actions]

Details
Package	serde_cbor
Version	0.11.2
Warning	unmaintained
URL	https://github.com/pyfisch/cbor
Patched Versions	n/a

The serde_cbor crate is unmaintained. The author has archived the github repository.

Alternatives proposed by the author:

• ciborium
• minicbor