fix staking version in genesis (#9280)

frame/staking/src/lib.rs

@@ -1212,7 +1212,7 @@ pub mod pallet {
 	/// True if network has been upgraded to this version.
 	/// Storage version of the pallet.
 	///
-	/// This is set to v6.0.0 for new networks.
+	/// This is set to v7.0.0 for new networks.
 	#[pallet::storage]
 	pub(crate) type StorageVersion<T: Config> = StorageValue<_, Releases, ValueQuery>;
 
@@ -1264,7 +1264,7 @@ pub mod pallet {
 			ForceEra::<T>::put(self.force_era);
 			CanceledSlashPayout::<T>::put(self.canceled_payout);
 			SlashRewardFraction::<T>::put(self.slash_reward_fraction);
-			StorageVersion::<T>::put(Releases::V6_0_0);
+			StorageVersion::<T>::put(Releases::V7_0_0);
 			MinNominatorBond::<T>::put(self.min_nominator_bond);
 			MinValidatorBond::<T>::put(self.min_validator_bond);