rustls 0.23.20 -> 0.23.22

Notably this brings in support for post-quantum-secure key exchange
using X25519MLKEM768 with the `aws-lc-rs` crypto provider. Support is
enabled by default, but at a low negotiation priority. A subsequent
commit will expose the feature required to make it the most preferred
KX alg.

See the upstream release notes for more information:
  https://github.com/rustls/rustls/releases/tag/v%2F0.23.22

librustls/Cargo.toml

@@ -28,7 +28,7 @@ fips = ["aws-lc-rs", "rustls/fips"]
 
 [dependencies]
 # Keep in sync with RUSTLS_CRATE_VERSION in build.rs
-rustls = { version = "0.23.18", default-features = false, features = ["std", "tls12"] }
+rustls = { version = "0.23.22", default-features = false, features = ["std", "tls12"] }
 webpki  = { workspace = true }
 libc = { workspace = true }
 log = { workspace = true }

librustls/build.rs

@@ -8,7 +8,7 @@ use std::{env, fs, path::PathBuf};
 // because doing so would require a heavy-weight deserialization lib dependency
 // (and it couldn't be a _dev_ dep for use in a build script) or doing brittle
 // by-hand parsing.
-const RUSTLS_CRATE_VERSION: &str = "0.23.18";
+const RUSTLS_CRATE_VERSION: &str = "0.23.22";
 
 fn main() {
     let out_dir = PathBuf::from(env::var_os("OUT_DIR").unwrap());