Replace Index for Nonce (#2740)

* replace Index for Nonce

* update lockfile for {"substrate", "polkadot"}

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Co-authored-by: parity-processbot <>

cumulus/pallets/collator-selection/src/mock.rs

@@ -57,7 +57,7 @@ impl system::Config for Test {
 	type DbWeight = ();
 	type RuntimeOrigin = RuntimeOrigin;
 	type RuntimeCall = RuntimeCall;
-	type Index = u64;
+	type Nonce = u64;
 	type Hash = H256;
 	type Hashing = BlakeTwo256;
 	type AccountId = u64;