Companion to substrate #10196 - Add group name in task metrics (#732)

* Use blank task group name

Signed-off-by: Andrei Sandu <andrei-mihail@parity.io>

* cargo fmt

Signed-off-by: Andrei Sandu <andrei-mihail@parity.io>

* Update

Signed-off-by: Andrei Sandu <andrei-mihail@parity.io>

* update Cargo.lock and switch from 0.9.12 to master

* format with LATEST nightly

Co-authored-by: Andronik Ordian <write@reusable.software>

client/network/src/lib.rs

@@ -522,6 +522,7 @@ impl<Block: BlockT> WaitToAnnounce<Block> {
 
 		self.spawner.spawn(
 			"cumulus-wait-to-announce",
+			None,
 			async move {
 				tracing::debug!(
 					target: "cumulus-network",