[disable-k2v-test] disable tests::k2v::test_poll_item as it is not 100% reliable

src/garage/tests/k2v/poll.rs

@@ -10,6 +10,7 @@ use crate::common;
 use crate::json_body;
 
 #[tokio::test]
+#[ignore = "currently broken (works ~99% of the time)"]
 async fn test_poll_item() {
 	let ctx = common::context();
 	let bucket = ctx.create_bucket("test-k2v-poll-item");