Cargo Audit in CI

[CramBL]

Hi I am using axoupdater (thanks!) and since I run cargo audit in CI I was made aware of https://rustsec.org/advisories/RUSTSEC-2025-0004 because of your dependency on openssl.

Of course it is just a matter of updating a dependency for you as well, but it might be worthwhile for you to run an audit job in CI such that you are made aware of these issues as soon as possible.