Rearrange merge_queue_sequential_order

Author: Sakib25800

src/bors/merge_queue.rs

@@ -578,19 +578,18 @@ mod tests {
     #[sqlx::test]
     async fn merge_queue_sequential_order(pool: sqlx::PgPool) {
         let gh = run_merge_queue_test(pool, async |tester| {
-            tester.post_comment("@bors r+").await?;
-            tester.expect_comments(1).await;
-
             let pr2 = tester.open_pr(default_repo_name(), false).await?;
             let pr3 = tester.open_pr(default_repo_name(), false).await?;
 
+            tester.post_comment("@bors r+").await?;
             tester
                 .post_comment(Comment::pr(pr2.number.0, "@bors r+"))
                 .await?;
             tester
                 .post_comment(Comment::pr(pr3.number.0, "@bors r+"))
                 .await?;
 
+            tester.expect_comments(1).await;
             tester
                 .expect_comment_on_pr(default_repo_name(), pr2.number.0)
                 .await?;