message: Add CHANGELOG entry for SupplyResponse::new
diff: @@ -23,6 +23,7 @@ and this project adheres to
  - cosmwasm-std: Upgrade `serde-json-wasm` dependency to 0.5.0 which adds map
  support to `to_vec`/`to_binary` and friends.
  - cosmwasm-std: Implement `AsRef<[u8]>` for `Binary` and `HexBinary` ([#1550]).
  +- cosmwasm-std: Add constructor `SupplyResponse::new` ([#1552]).
  [#1436]: https://github.com/CosmWasm/cosmwasm/issues/1436
  [#1437]: https://github.com/CosmWasm/cosmwasm/issues/1437
  @@ -30,6 +31,7 @@ and this project adheres to
  [#1478]: https://github.com/CosmWasm/cosmwasm/pull/1478
  [#1533]: https://github.com/CosmWasm/cosmwasm/pull/1533
  [#1550]: https://github.com/CosmWasm/cosmwasm/issues/1550
  +[#1552]: https://github.com/CosmWasm/cosmwasm/pull/1552
  [#1554]: https://github.com/CosmWasm/cosmwasm/pull/1554
  ### Changed
  