Upgrade the Rust toolchain to 1.99.1 (#55677)

## What changed

- Update Cargo and Bazel toolchain pins, CI and release workflows, and Windows setup from Rust `1.95.0` to `1.99.1`.
- Adapt Rust code to updated APIs and lint requirements, including `try_update` and `as_chunks`, and refresh the halfwidth sound marks snapshot.
- Update `webpki-root-certs` from `1.0.5` to `1.0.10` in the Cargo and Bazel lockfiles.

GitOrigin-RevId: e1aaed63b7e72bb8c8bbe25b32c6329c9a37b6c3

codex-rs/utils/path-uri/src/api_path_string.rs

@@ -263,7 +263,9 @@ fn render_windows_opaque_fallback(path_bytes: &[u8]) -> Option<String> {
         return None;
     }
     let path_wide = path_bytes
-        .chunks_exact(2)
+        .as_chunks::<2>()
+        .0
+        .iter()
         .map(|bytes| u16::from_le_bytes([bytes[0], bytes[1]]))
         .collect::<Vec<_>>();