message: add an entry to changelog
diff: @@ -19,6 +19,8 @@ and this project adheres to
  - cosmwasm-std: Implement `ceil`/`floor` for `Decimal`/`Decimal256`.
  - cosmwasm-std: Implement `saturating_add`/`sub`/`mul` for
  `Decimal`/`Decimal256`.
  +- cosmwasm-std: Implement `BankQuery::Supply` to allow querying the total supply of
  + a native token
  [#1334]: https://github.com/CosmWasm/cosmwasm/pull/1334
  