RUSTSEC-2023-0050: multipart is Unmaintained

[github-actions]

multipart is Unmaintained

Details
Status	unmaintained
Package	multipart
Version	0.18.0
URL
Date	2023-04-11

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

Alternatives:

• multer
• multiparty

See advisory page for additional details.

[blckngm]

Multipart is pulled in by rouille. We may need to replace rouille to fix this: tomaka/rouille#271

It's probably not a priority because rouille is only used in test and telemetry, and none of these are supposed to be exposed to the public.