Improve error messages when fetching single GitHub release (#9219)

Release Notes:

- N/A

crates/util/src/github.rs

@@ -85,14 +85,19 @@ pub async fn github_release_with_tag(
     let mut response = http
         .get(&url, Default::default(), true)
         .await
-        .context("error fetching latest release")?;
+        .with_context(|| format!("error fetching release {} of {}", tag, repo_name_with_owner))?;
 
     let mut body = Vec::new();
     response
         .body_mut()
         .read_to_end(&mut body)
         .await
-        .context("error reading latest release")?;
+        .with_context(|| {
+            format!(
+                "error reading response body for release {} of {}",
+                tag, repo_name_with_owner
+            )
+        })?;
 
     if response.status().is_client_error() {
         let text = String::from_utf8_lossy(body.as_slice());
@@ -111,7 +116,11 @@ pub async fn github_release_with_tag(
                 "GitHub API response text: {:?}",
                 String::from_utf8_lossy(body.as_slice())
             );
-            return Err(anyhow!("error deserializing latest release"));
+            Err(anyhow!(
+                "error deserializing release {} of {}",
+                tag,
+                repo_name_with_owner
+            ))
         }
     }
 }