Use yaml_serde in place of deprecated serde_yaml (#9040)

`serde_yaml` is now deprecated. The API-compatible `yaml_serde` should be used instead.


  Replace `serde_yaml` with `yaml_serde`. This is purely mechanical as the API is 1-to-1.


Co-Authored-By: Mac L <mjladson@pm.me>

lcli/src/parse_ssz.rs

@@ -141,7 +141,7 @@ fn decode_and_print<T: Serialize>(
         OutputFormat::Yaml => {
             println!(
                 "{}",
-                serde_yaml::to_string(&item)
+                yaml_serde::to_string(&item)
                     .map_err(|e| format!("Unable to write object to YAML: {e:?}"))?
             );
         }