v0.2.29: upstream auth, remove dead code, version bump

- Remove unused DockerAuth::fetch_with_auth() method
- Fix basic_auth_header docstring
- Bump to v0.2.29

nora-registry/src/config.rs

@@ -9,7 +9,6 @@ use std::fs;
 pub use crate::secrets::SecretsConfig;
 
 /// Encode "user:pass" into a Basic Auth header value, e.g. "Basic dXNlcjpwYXNz".
-/// Returns None if input is None.
 pub fn basic_auth_header(credentials: &str) -> String {
     format!("Basic {}", STANDARD.encode(credentials))
 }