RUSTSEC-2021-0127: serde_cbor is unmaintained

[github-actions]

serde_cbor is unmaintained

Details
Status	unmaintained
Package	serde_cbor
Version	0.11.2
URL	https://github.com/pyfisch/cbor
Date	2021-08-15

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

Alternatives proposed by the author:

• ciborium
• minicbor

See advisory page for additional details.

[iduartgomez]

@al8n I think we don’t need this anymore

[al8n]

@al8n I think we don’t need this anymore

This is wasmer's dependency, we do not depend on it directly.