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/.gitlab-ci.yml

@@ -381,6 +381,8 @@ test-linux-stable:                 &test-linux
     RUSTFLAGS:                     "-Cdebug-assertions=y -Dwarnings"
     RUST_BACKTRACE:                1
     WASM_BUILD_NO_COLOR:           1
+    # Ensure we run the UI tests.
+    RUN_UI_TESTS:                  1
   script:
     # this job runs all tests in former runtime-benchmarks, frame-staking and wasmtime tests
     - time cargo test --workspace --locked --release --verbose --features runtime-benchmarks --manifest-path ./bin/node/cli/Cargo.toml