Prepare for rust stable 1.60 (#11138)

* Prepare for rust stable 1.59

Besides preparing the UI tests this also adds a new script update-rust-stable.sh script for
simplifying the update of a rust stable version. This script will run all UI tests for the new
rust stable version and updating the expected output.

* Ensure we run the UI tests in CI

* use staging ci image

* More test updates

* Unignore test (#11097)

* empty commit for pipeline rerun

* empty commit for pipeline rerun

* Try to make clippy happy

* More clippy fixes

* FMT

* ci image production

Co-authored-by: alvicsam <alvicsam@gmail.com>
Co-authored-by: Alexander Samusev <41779041+alvicsam@users.noreply.github.com>

substrate/bin/node/cli/benches/transaction_pool.rs

@@ -126,7 +126,7 @@ fn create_account_extrinsics(
 	accounts
 		.iter()
 		.enumerate()
-		.map(|(i, a)| {
+		.flat_map(|(i, a)| {
 			vec![
 				// Reset the nonce by removing any funds
 				create_extrinsic(
@@ -162,7 +162,6 @@ fn create_account_extrinsics(
 				),
 			]
 		})
-		.flatten()
 		.map(OpaqueExtrinsic::from)
 		.collect()
 }
@@ -174,7 +173,7 @@ fn create_benchmark_extrinsics(
 ) -> Vec<OpaqueExtrinsic> {
 	accounts
 		.iter()
-		.map(|account| {
+		.flat_map(|account| {
 			(0..extrinsics_per_account).map(move |nonce| {
 				create_extrinsic(
 					client,
@@ -187,7 +186,6 @@ fn create_benchmark_extrinsics(
 				)
 			})
 		})
-		.flatten()
 		.map(OpaqueExtrinsic::from)
 		.collect()
 }