RUSTSEC-2025-0134 - rustls-pemfile is unmaintained

[kpcyrd]

Hello!

I'm currently getting this cargo deny result due to irc :)

error[unmaintained]: rustls-pemfile is unmaintained
    ┌─ /redacted/apt-swarm/Cargo.lock:305:1
    │
305 │ rustls-pemfile 2.2.0 registry+https://github.com/rust-lang/crates.io-index
    │ ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ unmaintained advisory detected
    │
    ├ ID: RUSTSEC-2025-0134
    ├ Advisory: https://rustsec.org/advisories/RUSTSEC-2025-0134
    ├ The rustls-pemfile crate is no longer maintained. The repository has been archived since August
      2025, and users are encouraged to depend directly on the underlying PEM parsing code included
      in rustls-pki-types since 1.9.0. The latest version of rustls-pemfile is in fact a thin wrapper
      around the same code used in rustls-pki-types, so migrating should be straightforward.
      
      The new API is represented by the [`PemObject`][PemObject] trait, which provides methods for
      reading a single or multiple PEM objects from a file or byte slice.
      
      [PemObject]: https://docs.rs/rustls-pki-types/latest/rustls_pki_types/pem/trait.PemObject.html
    ├ Announcement: https://github.com/rustls/pemfile/issues/61
    ├ Solution: No safe upgrade is available!
    ├ rustls-pemfile v2.2.0
      └── irc v1.1.0
          └── apt-swarm v0.5.1

[aatxe]

Definitely would take a fix for this. I can try to look maybe later this week too since it sounds like it won't be too laborious.