chore: add missing bugfix (zero coins pruning) to the changelog (cosm…

…os#9701)

* chore: add missing bugfix (zero coins pruning) to the changelog

* typo

CHANGELOG.md

@@ -42,6 +42,10 @@ Ref: https://keepachangelog.com/en/1.0.0/
 
 * (cli) [\#9593](https://github.com/cosmos/cosmos-sdk/pull/9593) Check if chain-id is blank before verifying signatures in multisign and error.
 
+### Bug Fixes
+
+* (bank) [\#9687](https://github.com/cosmos/cosmos-sdk/issues/9687) fixes [\#9159](https://github.com/cosmos/cosmos-sdk/issues/9159). Added migration to prune balances with zero coins.
+
 ### CLI Breaking Changes
 
 * [\#9621](https://github.com/cosmos/cosmos-sdk/pull/9621) Rollback [\#9371](https://github.com/cosmos/cosmos-sdk/pull/9371) and log warning if there's an empty value for min-gas-price in app.toml