message: [cluster-test] Fix changelog generation
  Github requires user agent per
  Closes:
  Approved by: phoenix-antigravity
diff: #![forbid(unsafe_code)]
  use anyhow::{format_err, Result};
  +use reqwest::header::USER_AGENT;
  use reqwest::Url;
  use serde::Deserialize;
  @@ -43,6 +44,7 @@ impl GitHub {
  let url: Url = url.parse().expect("Failed to parse github url");
  let request = self.client.get(url);
  let response = request
  + .header(USER_AGENT, "libra-cluster-test")
  .send()
  .map_err(|e| format_err!("Failed to query github: {:?}", e))?;
  let response: Vec<CommitInfo> = response
  