Companion for #13683 (#6944)

* Companion for #13683

* Wraps trait is not required

* update lockfile for {"substrate"}

---------

Co-authored-by: parity-processbot <>

polkadot/node/core/backing/src/tests.rs

@@ -34,7 +34,7 @@ use polkadot_primitives::{
 	CandidateDescriptor, CollatorId, GroupRotationInfo, HeadData, PersistedValidationData,
 	PvfExecTimeoutKind, ScheduledCore,
 };
-use sp_application_crypto::AppKey;
+use sp_application_crypto::AppCrypto;
 use sp_keyring::Sr25519Keyring;
 use sp_keystore::Keystore;
 use sp_tracing as _;