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/primitives/runtime-interface/tests/ui.rs

@@ -20,6 +20,11 @@ use std::env;
 #[rustversion::attr(not(stable), ignore)]
 #[test]
 fn ui() {
+	// Only run the ui tests when `RUN_UI_TESTS` is set.
+	if env::var("RUN_UI_TESTS").is_err() {
+		return
+	}
+
 	// As trybuild is using `cargo check`, we don't need the real WASM binaries.
 	env::set_var("SKIP_WASM_BUILD", "1");