RUSTSEC-2025-0134: rustls-pemfile is unmaintained

> rustls-pemfile is unmaintained

| Details | |
| ------------------- | ---------------------------------------------- |
| Status | unmaintained |
| Package | `rustls-pemfile` |
| Version | `1.0.4` |
| URL | [https://github.com/rustls/pemfile/issues/61](https://github.com/rustls/pemfile/issues/61) |
| Date | 2025-11-28 |

The rustls-pemfile crate is no longer maintained. The repository has been archived since August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

See [advisory page](https://rustsec.org/advisories/RUSTSEC-2025-0134.html) for additional details.

No source file or test is named. Start by locating uses of the rustls-pemfile 1.0.4 dependency and reviewing the rustls-pki-types PemObject API; done means the unmaintained dependency is no longer required and the existing test suite passes.

Written by the indexing model from the issue text.