[ci] Update rust in ci image (1.75 and 2024-01-22) (#3016)

cc https://github.com/paritytech/ci_cd/issues/926

---------

Signed-off-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: command-bot <>
Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: Bastian Köcher <git@kchr.de>
Co-authored-by: Liam Aharon <liam.aharon@hotmail.com>
Co-authored-by: Dónal Murray <donal.murray@parity.io>
Co-authored-by: Vladimir Istyufeev <vladimir@parity.io>

substrate/frame/alliance/src/mock.rs

@@ -20,8 +20,8 @@
 pub use sp_core::H256;
 use sp_runtime::traits::Hash;
 pub use sp_runtime::{
-	traits::{BlakeTwo256, IdentifyAccount, IdentityLookup, Lazy, Verify},
-	BuildStorage, MultiSignature,
+	traits::{BlakeTwo256, IdentifyAccount, Lazy, Verify},
+	BuildStorage,
 };
 use sp_std::convert::{TryFrom, TryInto};