Hotfix/fix ema update (#1289)

* spec bump

* add ema update min 1.0

Author: camfairchild

pallets/subtensor/src/staking/stake_utils.rs

@@ -59,7 +59,8 @@ impl<T: Config> Pallet<T> {
     pub fn update_moving_price(netuid: u16) {
         let alpha: I96F32 = SubnetMovingAlpha::<T>::get();
         let minus_alpha: I96F32 = I96F32::saturating_from_num(1.0).saturating_sub(alpha);
-        let current_price: I96F32 = alpha.saturating_mul(Self::get_alpha_price(netuid));
+        let current_price: I96F32 = alpha
+            .saturating_mul(Self::get_alpha_price(netuid).min(I96F32::saturating_from_num(1.0)));
         let current_moving: I96F32 =
             minus_alpha.saturating_mul(Self::get_moving_alpha_price(netuid));
         let new_moving: I96F32 = current_price.saturating_add(current_moving);

runtime/src/lib.rs

@@ -229,7 +229,7 @@ pub const VERSION: RuntimeVersion = RuntimeVersion {
     //   `spec_version`, and `authoring_version` are the same between Wasm and native.
     // This value is set to 100 to notify Polkadot-JS App (https://polkadot.js.org/apps) to use
     //   the compatible custom types.
-    spec_version: 233,
+    spec_version: 234,
     impl_version: 1,
     apis: RUNTIME_API_VERSIONS,
     transaction_version: 1,