Update Rust crate pem-rfc7468 to v1

Author: renovate[bot]

Cargo.lock

@@ -35,7 +35,7 @@ libipcc = { git = "https://github.com/oxidecomputer/ipcc-rs", rev = "7cdf2ab9c8d
 log = { version = "0.4.33", features = ["std"] }
 miette = { version = "7.6.0", features = ["fancy"] }
 p384 = { version = "0.13.1", default-features = false }
-pem-rfc7468 = { version = "0.7.0", default-features = false }
+pem-rfc7468 = { version = "1.0.0", default-features = false }
 rats-corim.git = "https://github.com/oxidecomputer/rats-corim"
 ron = "0.8"
 rpassword = "7.4.0"